BD5452AMUVE2 - ROHM SEMICONDUCTOR

○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays

. 1/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

TSZ22111・14・001

www.rohm.com

Datasheet

Middle Power Class-D Speaker Amplifier series

15W+15W

Class D Speaker Amplifier for Digital Input

BD5452AMUV

●

●●

●General Description

BD5452AMUV is a Class D Speaker Amplifier designed

for Flat-panel TVs in particular for space-saving and

low-power consumption, delivers an output power of

15W+15W. This IC employs state-of-the-art Bipolar,

CMOS, and DMOS (BCD) process technology. With this

technology, the IC can achieve high efficiency. In

addition, the IC is packaged in a compact reverse heat

radiation type power package to achieve low power

consumption and low heat generation and eliminates

necessity of external heat-sink up to a total output power

of 30W. This product satisfies both needs for drastic

downsizing, low-profile structures and many function,

high quality playback of sound system.

●

●●

●Features

 This IC has one system of digital audio interface.(I2S

format, SDATA: 16 / 20 / 24bit, LRCLK: 32kHz /

44.1kHz / 48kHz, BCLK: 64fs(fixed), MCLK: 256fs /

512fs)

 Low supply current at RESET mode.

 The decrease in sound quality because of the change

of the power supply voltage is prevented with the

feedback circuitry of the output. In addition, a low

noise and low distortion are achieved.

 Eliminate large electrolytic-capacitors for high

performance of Power Supply Rejection.

 Power Limit Function. (at RL =8Ω, 10W /5W /OFF)

 Available for Monaural mode.

 Within the wide range of the power supply voltage, it

is possible to operate in a single power supply. (10 to

18V)

 It contributes to miniaturizing, making to the thin type,

and the power saving of the system by high efficiency

and low heat.

 Eliminates pop noise generated when the power

supply goes on/off, or when the power supply is

suddenly shut off. High quality muting performance is

realized by using the soft-muting technology.

 This IC is a highly reliable design to which it has

various protection functions. (High temperature

protection, under voltage protection, Output short

protection, Output DC voltage protection and Clock

stop protection, (MCLK, BCLK, LRCLK)

 Small package (VQFN032V5050 package)

contributes to reduction of PCB area.

●

●●

●Applications

 Flat Panel TVs (LCD, Plasma), Home Audio, Desktop

PC, Amusement equipments, Electronic Music

equipments, etc.

●

●●

●Key Specifications

 Supply voltage: 10V to 18V

 Speaker output power: 15W+15W

(VCC=16V, RL=8Ω, Power Limit=Off)

 Total harmonic distortion: 0.08％(Po=4.5W)

 Crosstalk: 80dB(Typ.)

 PSRR: 65dB(Typ.)

 Output noise voltage: 100μVrms(Typ.)

 Standby current: 100µA (Typ.)

 Operating temperature range: -25℃ to +85℃

●

●●

●Package(s) W(Typ.) x D(Typ.) x H(Max.)

VQFN032V5050 5.00mm x 5.00mm x 1.00mm

●Typical Application Circuit

PLMIT0

PLMIT1

BCLK

LRCLK

RSTX

SDATA

Digital Audio Source

μ-con

MUTEＸ

SP ch1

(Lch)

SP ch2

(Rch)

ERROR

OUT1P

OUT1N

OUT2P

OUT2N

MCLK

Figure 1. Typical Application Circuit

VQFN032V5050

Not Recommended for

New Designs

Datasheet

2/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●

●Pin Configuration

Figure 2. Pin Configuration

●

●●

●Pin Description

Pin No. Symbol I/O

Pin No.

Symbol I/O

1 SDATA I 9 FILA O 17 VCCP1 I 25 GNDP2

-

2 BCLK I 10 GNDA - 18 I 26 OUT2P O

3 LRCLK I 11 OUT1N O 19 PLIMT0 I 27 O

4 RSTX I 12 O 20 PLIMT1 I 28 GNDP2

-

5 MUTEX I 13 GNDP1 - 21 CLK_MOD I 29 OUT2N O

6 REG_G O 14 OUT1P O 22 ERROR O 30 O

7 REG3 O 15 O 23 VCCP2 I 31 VCCA I

8 FILP O 16 GNDP1 - 24 I 32 MCLK I

(TOP VIEW)

Not Recommended for

New Designs

Datasheet

3/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●

●Block Diagram

12345678

I/F

I2S I/F

Driver

FET

1P

Driver

FET

1N

910 11 12 13 14 15 16

24 23 22 21 20 19 18 17

32

3130

29

28272625

Driver

FET

2P

Driver

FET

2N

Under Voltage Protection

Over Voltage Protection

Clock Stop Protection

Output Short Protection

Output DC Voltage Protection

High Temperature Protection

×8 Over

Sampling Digital Filter

PWM

Modulator

VCCP1

VCCP2

VCCA

REG3

FILA

FILP

REG_G

I/F

SDATA

PLIMT1 PLIMT0 VCCP1

OUT1P

FILA

FILPREG3REG_G

OUT1P

GNDP1

OUT1N

GNDA

MUTEXRSTXLRCLKBCLK

MCLK

OUT2N

OUT2P

VCCA

OUT2N

OUT2P

VCCP2

GNDP2

CLK_MODERRORVCCP2

OUT1N

GNDP1

VCCP1

Figure 3. Block Diagram

Not Recommended for

New Designs

Datasheet

4/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●

●Absolute Maximum Ratings

Item Symbol Limit Unit Conditions

Supply voltage VCCmax

-0.3 to 22 V Pin 17,18,23,24,31 ※1 ※2

Power dissipation Pd 3.26 W ※3

4.56 W ※4

Input voltage VIN -0.3 to 4.5 V Pin 1 to 5, 19 to 21, 32

Terminal voltage 1 VPIN1 -0.3 to 7.0 V Pin 6,8,9

Terminal voltage 2 VPIN2 -0.3 to 4.5 V Pin 7

Terminal voltage 3 ※5 VPIN3 -0.3 to 22 V Pin 11,12,14,15,26,27,29,30

Open-drain terminal voltage VERR -0.3 to 22 V Pin 22

Operating temperature range Topr -25 to +85 ℃

Storage temperature range Tstg -55 to +150 ℃

Maximum junction temperature Tjmax +150 ℃

※1 The voltage that can be applied reference to GND (Pin 10, 13, 16, 25, 28).

※2 Do not, however exceed Pd and Tjmax=150℃.

※3 74.2mm×74.2mm×1.6mm, FR4, 4-layer glass epoxy board

(Top and bottom layer back copper foil size: 20.2mm2, 2nd and 3rd layer back copper foil size: 5505mm2)

Derating in done at 26.1mW/℃ for operating above Ta＝25℃. There are thermal via on the board.

※5 (Reference info.) It is confirmed to this terminal to be able to tolerate undershoot within the range of the following Figure 4

with ROHM evaluation board.

Figure 4. Undershoot Tolerance Range

●

●●

●Recommended Operating Rating

Item Symbol Limit Unit Conditions

Supply voltage VCC 10 to 18 V

Minimum load impedance RL 3.6 Ω VCC≦18V

3.2 Ω VCC≦16V

Not Recommended for

New Designs

Datasheet

5/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●

●Electrical Characteristics

（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,

Output LC filter：L=10uH, C=0.1uF）

Item Symbol

Limit Unit Pin Condition

Min

Typ

Max

Total circuit

Circuit current (Reset mode) ICC1 - 0.1 0.2

mA No load, RSTX=0V, MUTEX=0V

Circuit current (Mute mode) ICC2 - 15 25

mA No load, RSTX=3.3V, MUTEX=0V

Circuit current (Sampling mode) ICC3 - 50 80

mA No load, RSTX=3.3V, MUTEX=3.3V

Open-drain terminal Low level voltage VERR

- - 0.8

V Pin22, IO=0.5mA

Regulator output voltage 1 VREGG

4.7

5.0 5.3

V Pin6

Regulator output voltage 2 VREG3

3 3.3 3.6

V Pin7

High level input voltage VIH 2 - 3.3

V Pin 1 to 5, 1921, 32

Low level input voltage VIL 0 - 0.9

V Pin 1 to 5, 19 to 21, 32

Input current IIH 50

66 95

µA Pin 1 to 5, 19 to 21, 32, VIN = 3.3V

(Input pull-down terminal)

Speaker Output

Maximum output power 1 PO1 - 15 - W Vcc=16V, THD+n=10%,

PLIMT0=L, PLIMT1=L ※6

Maximum output power 2 PO2 10

- - W Vcc=16V, THD+n=10%,

PLIMT0=H, PLIMT1=L ※6

Maximum output power 3 PO3 5 - - W Vcc=16V, THD+n=10%,

PLIMT0=H, PLIMT1=H ※6

Voltage gain1 GV26 25

26 27

dB Po=1W, PLIMT0=L, PLIMT1=L ※6

Voltage gain2 GV20 19

20 21

dB Po=1W, PLIMT0=H, PLIMT1=L ※6

Voltage gain3 GV17 16

17 18

dB Po=1W, PLIMT0=H, PLIMT1=H ※6

Total harmonic distortion1 THD1 - 0.16

- % PO=1W, BW=20 to 20kHz (AES17)

PLIMT0=H, PLIMT1=L ※6

Total harmonic distortion2 THD2 - 0.08

- % PO=4.5W, BW=20 to 20kHz (AES17)

PLIMT0=H, PLIMT1=L ※6

Total harmonic distortion3 THD3 - 0.24

0.3

% PO=1W, BW=20 to 20kHz (AES17)

VCC=15.7V, PLIMT0=H, PLIMT1=L ※6

Crosstalk CT 60

80 - dB PO=1W, BW=IHF-A

PLIMT0=H, PLIMT1=L ※6

PSRR

(Sampling mode) PSRR

- 65 - dB Vripple=1Vrms, f=1kHz ※6

PLIMT0=H, PLIMT1=L ※6

Output noise voltage

(Sampling mode) VNO - 100

200

µVrms

-∞dBFS, BW=IHF-A ※6

PLIMT0=H, PLIMT1=L

PWM sampling frequency fPWM1

- 256

- kHz fs=32kHz ※6

fPWM2

- 352.8

- kHz fs=44.1kHz ※6

fPWM3

- 384

- kHz fs=48kHz ※6

※6 These items show the typical performance of device and depend on board layout, parts, and power supply.

The standard value is in mounting device and parts on surface of ROHM’s board directly.

Not Recommended for

New Designs

Datasheet

6/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Typical Performance Curves (Reference) (1/8)

（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,

Output LC filter：L=10uH, C=0.1uF）

0

10

20

30

40

50

60

70

80

90

100

0 5 10 15

Output Power [W/CH]

Efficiency [%]

0.0

0.5

1.0

1.5

2.0

2.5

0 5 10 15

Output Power [W/CH]

ICC [A]

0

10

20

30

40

50

60

70

80

8 10 12 14 16 18 20

VCC [V]

ICC [mA]

0.00

0.02

0.04

0.06

0.08

0.10

0.12

0.14

0.16

8 10 12 14 16 18 20

VCC [V]

ICC [mA]

Figure 5. VCC vs. ICC Figure 6. VCC vs. ICC

Figure 7. Output Power vs. Efficiency

PLIMT0=L, PLIMT1=L Figure 8. Output Power vs. ICC

PLIMT0=L, PLIMT1=L

RSTX=MUTEX=L

RL=8Ω

No signal

MUTEX=H

RSTX=H

RL=8Ω

No signal

MUTEX=L

RL=8Ω

RL=6Ω

RL=4Ω

RL=8Ω RL=6Ω

RL=4Ω

Not Recommended for

New Designs

Datasheet

7/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Typical Performance Curves (Reference) (2/8)

（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,

Output LC filter：L=10uH, C=0.1uF）

※ Dotted line means internal dissipation is over package power.

5V/div

VCC=12V

RL=8Ω

Po=1W

fin=500Hz

MUTEX(5pin)

2V/div

Speaker Output

5ms/div

Figure 9. Waveform of Soft Start

5V/div

VCC=12V

RL=8Ω

Po=1W

fin=500Hz

MUTEX(5pin)

2V/div

Speaker Output

5ms/div

Figure 10. Waveform of Soft Mute

0

5

10

15

20

8 10 12 14 16 18 20

VCC [V]

Output Power [W/CH]

Figure 11. VCC vs. Output Power ※

PLIMT0=L, PLIMT1=L

Figure 12. Output Power vs. ICC ※

PLIMT0=L, PLIMT1=L

THD+N=10%

THD+N=1%

RL=8Ω

0

0.5

1

1.5

2

2.5

3

0 5 10 15 20

Output Power [W/CH]

ICC [A]

VCC=10V

VCC=12V

VCC=16V

VCC=18V

RL=8Ω

Not Recommended for

New Designs

Datasheet

8/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Typical Performance Curves (Reference) (3/8)

（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,

Output LC filter：L=10uH, C=0.1uF）

※ Dotted line means internal dissipation is over package power.

Figure 13. VCC vs. Output Power ※

PLIMT0=L, PLIMT1=L

Figure 14. Output Power vs. ICC ※

PLIMT0=L, PLIMT1=L

Figure 15. VCC vs. Output Power ※

PLIMT0=L, PLIMT1=L

Figure 16. Output Power vs. ICC ※

PLIMT0=L, PLIMT1=L

0

5

10

15

20

8 10 12 14 16 18 20

VCC [V]

Output Power [W/CH]

THD+N=10%

THD+N=1%

RL=6Ω

0

5

10

15

20

8 10 12 14 16 18 20

VCC [V]

Output Power [W/CH]

THD+N=10%

THD+N=1%

RL=4Ω

0

0.5

1

1.5

2

2.5

3

0 5 10 15

Output Power [W/CH]

ICC [A]

VCC=10V

VCC=12V

RL=6Ω

VCC=16V

VCC=18V

0

0.5

1

1.5

2

2.5

3

0 2 4 6 8 10

Output Power [W/CH]

ICC [A]

VCC=10V

VCC=12V

RL=4Ω

VCC=16V

VCC=18V

Not Recommended for

New Designs

Datasheet

9/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Typical Performance Curves (Reference) (4/8)

（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,

Output LC filter：L=10uH, C=0.1uF）

-140

-120

-100

-80

-60

-40

-20

0

10 100 1k 10k 100k

Freq [Hz]

Noise FFT [dBV]

Figure 17. FFT of output noise voltage

OUT1

OUT2 No Signal

B.W. none

RL=8Ω

10

15

20

25

30

10 100 1k 10k 100k

Freq [Hz]

Voltage Gain [dB]

Figure 18. Freq vs. Voltage Gain

OUT1

OUT2

Po=1W

B.W. none

RL=8Ω

0.01

0.1

1

10

100

0.01 0.1 1 10

Po [W]

THD+N [%]

Figure 19. Po vs. THD+N

B.W. 20 to 20kHz

AES17

RL=8Ω

f=1kHz

f=100Hz

f=10kHz

0.01

0.1

1

10

10 100 1k 10k 100k

Freq [Hz]

THD+N [%]

Figure 20. Freq vs. THD+N

B.W. 20 to 20kHz

AES17

RL=8Ω

OUT1

OUT2

Not Recommended for

New Designs

Datasheet

10/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Typical Performance Curves (Reference) (5/8)

（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,

Output LC filter：L=10uH, C=0.1uF）

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

0.01 0.1 1 10

Po [W]

Crosstalk [dB]

Figure 21. Po vs. Crosstalk

RL=8Ω

OUT2 to OUT1

OUT1 to OUT2

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

10 100 1k 10k 100k

Freq [Hz]

Crosstalk [dB]

Figure 22. Freq vs. Crosstalk

OUT2 to OUT1

OUT1 to OUT2

RL=8Ω

-140

-120

-100

-80

-60

-40

-20

0

10 100 1k 10k 100k

Freq [Hz]

Noise FFT [dBV]

Figure 23. FFT of output noise voltage

OUT1

OUT2 No Signal

B.W. none

RL=6Ω

10

15

20

25

30

10 100 1k 10k 100k

Freq [Hz]

Voltage Gain [dB]

Figure 24. Freq vs. Voltage Gain

OUT1

OUT2 Po=1W

B.W. none

RL=6Ω

Not Recommended for

New Designs

Datasheet

11/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Typical Performance Curves (Reference) (6/8)

（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,

Output LC filter：L=10uH, C=0.1uF）

0.01

0.1

1

10

100

0.01 0.1 1 10 100

Po [W]

THD+N [%]

Figure 25. Po vs. THD+N

B.W. 20 to 20kHz

AES17

RL=6Ω

f=1kHz

f=100Hz

f=10kHz

0.01

0.1

1

10

10 100 1k 10k 100k

Freq [Hz]

THD+N [%]

Figure 26. Freq vs. THD+N

B.W. 20 to 20kHz

AES17

RL=6Ω

OUT1

OUT2

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

0.01 0.1 1 10 100

Po [W]

Crosstalk [dB]

Figure 27. Po vs. Crosstalk

RL=6Ω

OUT2 to OUT1

OUT1 to OUT2

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

10 100 1k 10k 100k

Freq [Hz]

Crosstalk [dB]

Figure 28. Freq vs. Crosstalk

OUT2 to OUT1

OUT1 to OUT2

RL=6Ω

Not Recommended for

New Designs

Datasheet

12/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Typical Performance Curves (Reference) (7/8)

（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,

Output LC filter：L=10uH, C=0.1uF）

-140

-120

-100

-80

-60

-40

-20

0

10 100 1k 10k 100k

Freq [Hz]

Noise FFT [dBV]

Figure 29. FFT of output noise voltage

OUT1

OUT2 No Signal

B.W. none

RL=4Ω

10

15

20

25

30

10 100 1k 10k 100k

Freq [Hz]

Voltage Gain [dB]

Figure 30. Freq vs. Voltage Gain

OUT1

OUT2 Po=1W

B.W. none

RL=4Ω

0.01

0.1

1

10

100

0.01 0.1 1 10 100

Po [W]

THD+N [%]

Figure 31. Po vs. THD+N

B.W. 20 to 20kHz

AES17

RL=4Ω

f=1kHz

f=100Hz

f=10kHz

0.01

0.1

1

10

10 100 1k 10k 100k

Freq [Hz]

THD+N [%]

Figure 32. Freq vs. THD+N

B.W. 20 to 20kHz

AES17

RL=4Ω

OUT1

OUT2

Not Recommended for

New Designs

Datasheet

13/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Typical Performance Curves (Reference) (8/8)

（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,

Output LC filter：L=10uH, C=0.1uF）

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

0.01 0.1 1 10 100

Po [W]

Crosstalk [dB]

Figure 33. Po vs. Crosstalk

RL=4Ω

OUT2 to OUT1

OUT1 to OUT2

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

10 100 1k 10k 100k

Freq [Hz]

Crosstalk [dB]

Figure 34. Freq vs. Crosstalk

OUT2 to OUT1

OUT1 to OUT2

RL=4Ω

Figure 36. Audio Characteristics Measurement Environment

0

5

10

15

20

8 10 12 14 16 18 20

VCC [V]

Maximum Output Power [W/CH]

Figure 35. VCC vs. Maximum Output Power

26dB

17dB

B.W. 20 to 20kHz

AES17

RL=8Ω

f=1kHz

THD+N=1%

20dB

Not Recommended for

New Designs

Datasheet

14/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●About digital audio input

1) Input digital audio signal sampling frequency (fs) explanation

PWM sampling frequency, Soft-start, Soft-mute time, and the detection time of the DC voltage protection in

the speaker depends on sampling frequency (fs) of the digital audio input.

Sampling frequency of the digital

audio input (fs) PWM sampling frequency

(fpwm) Soft-start / Soft-mute time DC voltage protection in the

speaker detection time

32kHz 256kHz 32msec. 1.02sec

44.1kHz 352.8kHz 23msec. 0.74sec

48kHz 384kHz 21.5msec. 0.68sec

2) Format of digital audio input

MCLK: It is System Clock input signal.

It will input LRCLK, BCLK, SDATA that synchronizes with this clock that are 256 times of sampling

frequency (256fs) or 512 times of sampling frequency (512fs).

LRCLK: It is L/R clock input signal.

It corresponds to 32kHz/44.1kHz/48kHz with that clock(fs) which are same to the sampling

frequency (fs). The data of a left channel and a right channel for one sample is input to

this section

BCLK: It is Bit Clock input signal.

It is used for the latch of data in every one bit by sampling frequency’s 64 times

sampling frequency (64fs).

SDATA: It is Data input signal.

It is amplitude data. The data length is different according to the resolution of the input

digital audio data. It corresponds to 16/ 20/ 24 bit.

3) I2S data format

The Low section of LRCLK becomes Lch, the High section of LRCLK becomes Rch.

After changing LRCLK, second bit becomes MSB.

Figure 37. I2S Data Format 64fs, 24bit Data

Figure 38. I2S Data Format 64fs, 20bit Data

Figure

39

.

I2S Data Format 64fs, 16bit Data

Not Recommended for

New Designs

Datasheet

15/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

4) Audio Interface format and timing

Recommended timing and operating conditions(MCLK, BCLK, LRCLK and SDATA)

Limit

No. Parameter Symbol MCLK=256fs MCLK=512fs Unit

Min. Max. Min. Max.

1 MCLK frequency fMCLK 8.192 12.288 16.384 24.576 MHz

2 LRCLK frequency fLRCLK 32 48 32 48 kHz

3 BCLK frequency fBCLK 2.048 3.072 2.048 3.072 MHz

4 Setup time, LRCLK※7 tSU;LR 20 － 20 － ns

5 Hold time, LRCLK※7 tHD;LR 20 － 20 － ns

6 Setup time, SDATA tSU;SD 20 － 20 － ns

7 Hold time, SDATA tHD;SD 20 － 20 － ns

8 MCLK, DYTY dMCLK 40 60 40 60 %

9 LRCLK, DYTY dLRCLK

40 60 40 60 %

10 BCLK, DUTY dBCLK 40 60 40 60 %

※7 This regulation is to keep rising edge of LRCK and rising edge of BCLK from overlapping.

Figure 40. Clock timing

Figure 41. Audio Interface timing

MCLK

1/ｆ

LRCLK

1/fLRCLK

BCLK

1/fBCLK

/ MCLK

LRCLK

BCLK

SDATA

tHD;LR tSU;LR

tHD ;SD

;

tSU ;SD

;

Not Recommended for

New Designs

Datasheet

16/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Timing Chart

1) Power supply start-up sequence

VCCP1 (17, 18pin)

VCCP2 (23, 24pin)

VCCA (31pin)

REG3 (7pin)

REG_G (6pin) REG_G

REG_3

t

MUTEX (5pin)

RSTX (4pin)

t

MCLK (32pin)

SDATA(1pin)

BCLK(2pin)

LRCLK(3pin)

FILP

FILA (9pin)

Speaker output

①Power up VCCA, VCCP1, VCCP2 simultaneously.

③ Digital audio data communication.

④ After RSTX=L→H wait more than

20msec to MUTEX=L→H

② Set RSTX to High

after power up.

Soft-start

21.5msec(fs=48kHz)

FILA

FILP (8pin)

With Vcc>10V, waiting time unnecessary.

With Vcc>10V, there are no problem sending digital

audio data at RSTX=L.

More than 20msec

Figure 42. Power supply start-up sequence

Not Recommended for

New Designs

Datasheet

17/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

2) Power supply shut-down sequence

With Vcc＞10V, there are no problem

sending digital audio data even by RSTX=L

Speaker output

REG_G

REG_3

t

FILP

①Set MUTEX to Low.

②After stopping speaker output,

turn off the transmission of digital audio signal.

③Set RSTX to Low

④ Power down VCCA, VCCP1,

VCCP2, simultaneously.

Soft-mute

21.5msec(fs=48kHz)

FILA

VCCP1 (17, 18pin)

VCCP2 (23, 24pin)

VCCA (31pin)

REG3 (7pin)

REG_G (6pin)

MUTEX (5pin)

RSTX (4pin)

MCLK (32pin)

SDATA(1pin)

BCLK(2pin)

LRCLK(3pin)

FILA (9pin)

FILP (8pin)

Figure 43. Power supply shut-down sequence

Not Recommended for

New Designs

Datasheet

18/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

3) About changing audio signal

The output PWM frequency of BD5452AMUV becomes the frequency of eight times of the sampling frequency fs.

Therefore output PWM frequency becomes unstable when MCLK seems to become unstable at the time of channel

switching at input switching and so on, too. It is possible that the LC resonance is occurred and a short protections

function worked.

If you can expect MCLK unstable period, we suggest following process.

1. Mute AUDIODATA from scalar IC.(A)

2. After muting AUDIODATA from scalar IC (B), set MUTEX=L(C).

3. After MCLK go to stable state, set MUTEX=H(D).

4. Release mute AUDIODARA from scalar IC(E).

MCLK

AUDIODATA

MUTEX

OUTX

A B C DE

PWM stop

MCLK unstable period

No matter of order D and E

Figure 44. Action at MCLK unstable1

Figure 45. Action at MCLK unstable2

Not Recommended for

New Designs

Datasheet

19/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●About the protection function

Protection function Detecting & Releasing condition PWM ERROR

Output Output

Output short

protection Detecting

condition

Detecting current = 10A (TYP.) HiZ_Low L

(Latch) (Latch)

DC voltage protection

in the speaker Detecting

condition

At speaker output, impressed DC voltage over 0.68sec

(fs=48kHz) over 3.5Vbetween (power limit off),

1.75V(power limit 10W) or 1.225V(power limit 5W)

HiZ_Low

(Latch) L

(Latch)

High temperature

protection

Detecting

condition

Chip temperature to be above 150℃ (TYP.) HiZ_Low L

Releasing

condition

Chip temperature to be below 120℃ (TYP.) Normal

operation

Under voltage

protection

Detecting

condition

Power supply voltage to be below 8V (TYP.) HiZ_Low H

Releasing

condition

Power supply voltage to be above 9V (TYP.) Normal

operation

Over voltage

Protection

Detecting

condition

Power supply voltage to be above 20V(TYP.) HiZ_Low H

Releasing

condition

Power supply voltage to be below 19.5V(TYP.) Normal

operation

Clock stop protection

Detecting

condition

No change to MCLK more than 1usec (TYP.) or HiZ_Low H

no change to BCLK more than 1usec (TYP.) or

no change to LRCLK more than 21usec (at fs=48kHz.).

Releasing

condition

Normal input to MCLK, BCLK and LRCLK. Normal

operation

* The ERROR pin is Nch open-drain output.

* Once an IC is latched, the circuit is not released automatically even after an abnormal status is removed. The following procedures ① or ② is available for

recovery.

①After turning MUTEX terminal to Low(holding time to Low = 10msec(Min.)) turn back to High again.

②Restore power supply after dropping to power supply voltage Vcc＜3V(10msec (Min.) holding) which internal power on reset circuit activates.

Not Recommended for

New Designs

Datasheet

20/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

1) Output short protection（Short to the power supply）

This IC has the PWM output short protection circuit that stops the PWM output when the PWM output is

short-circuited to the power supply due to abnormality.

Detecting condition - It will detect when MUTEX pin is set High and the current that flows in the PWM output

pin becomes 10A(TYP.) or more. The PWM output instantaneously enters the state of

HiZ-Low if detected, and IC does the latch.

Releasing method - ①After turning MUTEX terminal to Low(holding time to Low = 10msec(Min.)) turn back to

High again.

②Restore power supply after dropping to power supply voltage Vcc＜3V(10msec (Min.)

holding) which internal power on reset circuit activates.

Figure 46. Sequence of the Output short protection

ERROR (22pin)

t

OUT1P(14,15pin)

OUT1N(11,12pin)

OUT2P(26,27pin)

OUT2N(29,30pin)

10A(TYP.)

t

MUTEX(5pin)

１μsec(TYP.)

t

Short to Vcc Release from short to Vcc

PWM out : IC latches with HiZ-Low. Released from latch state.

Over current

Latch release

10msec(Min.)

Not Recommended for

New Designs

Datasheet

21/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

2) Output short protection（Short to GND）

This IC has the PWM output short protection circuit that stops the PWM output when the PWM output is

short-circuited to GND due to abnormality.

Detecting condition - It will detect when MUTEX pin is set High and the current that flows in the

PWM output terminal becomes 10A(TYP.) or more. The PWM output

instantaneously enters the state of HiZ-Low if detected, and IC does the latch.

Releasing method - ①After turning MUTEX terminal to Low(holding time to Low = 10msec(Min.))

turn back to High again.

②Restore power supply after dropping to power supply voltage Vcc＜3V

(10msec (Min.) holding) which internal power on reset circuit activates.

１μsec(TYP.)

t

10A(TYP.)

t

Short to GND Release from short to GND

PWM out : IC latches with HiZ-Low. Released from latch state.

Over current

Latch release

10msec(Min.)

ERROR (22pin)

OUT1P(14,15pin)

OUT1N(11,12pin)

OUT2P(26,27pin)

OUT2N(29,30pin)

MUTEX(5pin)

Figure 47. Sequence of the Output short protection

Not Recommended for

New Designs

Datasheet

22/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

3) DC voltage protection in the speaker1

When the DC voltage in the speaker is impressed due to abnormality, this IC has the protection circuit where the

speaker is defended from destruction.

Detecting condition - It will detect when MUTEX pin is set High and speaker output is more than

3.5V(TYP, Power Limit OFF setting), 1.75V(TYP, Power Limit 10W setting),

1.225V(TYP, Power Limit 5W setting), 0.68sec(fs=48kHz) or above.

Once detected, The PWM output instantaneously enters the state of HiZ-Low,

and IC does the latch.

Releasing method - ①After turning MUTEX terminal to Low(holding time to Low = 10msec(Min.))

turn back to High again.

②Restore power supply after dropping to power supply voltage Vcc＜3V

(10msec (Min.) holding) which internal power on reset circuit activates.

（Power Limit OFF settings）

Figure 48. Sequence of DC voltage protection in the speaker1

Not Recommended for

New Designs

Datasheet

23/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

4) DC voltage protection in the speaker2

About DC voltage protection at PWM output Duty=0% or 100%

When the DC voltage in the speaker is impressed due to abnormality, this IC has the protection circuit where

the speaker is defended from destruction.

Detecting condition - It will detect when MUTEX pin is set High or Low and PWM output Duty=0% or

100% , 43msec(fs=48kHz) or above. Once detected, The PWM output

instantaneously enters the state of HiZ-Low, and IC does the latch.

Releasing method - ①After turning MUTEX terminal to Low(holding time to Low = 10msec(Min.))

turn back to High again.

②Restore power supply after dropping to power supply voltage Vcc＜3V

(10msec (Min.) holding) which internal power on reset circuit activates.

Figure 49. Sequence of DC voltage protection in the speaker2

Not Recommended for

New Designs

Datasheet

24/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

5) High temperature protection

This IC has the high temperature protection circuit that prevents thermal reckless driving under an abnormal state for

the temperature of the chip to exceed Tjmax=150℃.

Detecting condition - It will detect when MUTEX pin is set High and the temperature of the chip becomes

150℃(TYP.) or more. Speaker output turns MUTE immediately, when High

temperature protection is detected.

Releasing condition - It will release when MUTEX pin is set High and the temperature of the chip becomes

120℃(TYP.) or less. The speaker output is outputted through a soft-start when

released. (Auto recovery)

Temperature of

IC chip junction(℃)

Speaker output

Hi-Z Low

150℃

120℃

3.3V

ERROR (22pin)

t

Soft-start

21.5msec(fs=48KHz)

OUT1P(14,15pin)

OUT1N(11,12pin)

OUT2P(26,27pin)

OUT2N(29,30pin)

Figure 50. Sequence of High temperature protection

Not Recommended for

New Designs

Datasheet

25/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

6) Under voltage protection

This IC has the under voltage protection circuit that make speaker output mute once detecting extreme drop of the

power supply voltage.

Detecting condition - It will detect when MUTEX pin is set High and the power supply voltage becomes

lower than 8V(TYP.).Speaker output turn MUTE immediately, when Under voltage

protection is detected.

Releasing condition - It will release when MUTEX pin is set High and the power supply voltage

becomes more than 9V(TYP.). The speaker output is outputted through a

soft-start when released. (Auto recovery)

Figure 51. Sequence of Under voltage protection

Not Recommended for

New Designs

Datasheet

26/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

7) Over voltage protection

This IC has the under voltage protection circuit that make speaker output mute once detecting extreme drop of the

power supply voltage.

Detecting condition - It will detect when MUTEX pin is set High and the power supply voltage becomes

more than 20V(TYP.).Speaker output turn MUTE immediately, when over voltage

protection is detected.

Releasing condition - It will release when MUTEX pin is set High and the power supply voltage becomes

lower than 19.5V(TYP.). The speaker output is outputted through a soft-start when

released. (Auto recovery)

ERROR (22pin)

19.5V

20V

3.3V

t

Speaker

Output

HiZ-Low

Soft-start (Auto recovery)

21.5msec(fs=48kHz)

VCCP1 (17, 18pin)

VCCP2 (23, 24pin)

VCCA (31pin)

OUT1P(14,15pin)

OUT1N(11,12pin)

OUT2P(26,27pin)

OUT2N(29,30pin)

Figure 52. Sequence of Over voltage protection

Not Recommended for

New Designs

Datasheet

27/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

8) Clock stop protection(MCLK)

This IC has the clock stop protection circuit that make the speaker output mute when the MCLK signal of the digital

audio input stops.

Detecting condition - It will detect when MUTEX pin is set High and the MCLK signal stops for about

1usec or more. Speaker output turn MUTE immediately, clock stop protection is

detected.

Releasing condition - It will release when MUTEX pin is set High and the MCLK signal returns to the

normal clock operation. The speaker output is outputted through a soft-start when

released. (Auto recovery)

Figure 53. Sequence of Clock stop protection(MCLK)

Not Recommended for

New Designs

Datasheet

28/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

9) Clock stop protection(BCLK)

This IC has the clock stop protection circuit that make the speaker output mute when the BCLK signal of the digital

audio input stops.

Detecting condition - It will detect when MUTEX pin is set High and the BCLK signal stops for about

1usec or more. Speaker output turns MUTE immediately, when clock stop

protection is detected.

Releasing condition - It will release when MUTEX pin is set High and the BCLK signal returns to the

normal clock operation. The speaker output is outputted through a soft-start when

released. (Auto recovery)

Figure 54. Sequence of Clock stop protection(BCLK)

Not Recommended for

New Designs

Datasheet

29/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

10) Clock stop protection(LRCLK)

This IC has the clock stop protection circuit that make the speaker output mute when the LRCLK signal of the

digital audio input stops.

Detecting condition - It will detect when MUTEX pin is set High and the LRCLK signal stops for about

21usec(at fs=48kHz) or more. Speaker output turn MUTE immediately, when clock

stop protection is detected.

Releasing condition - It will release when MUTEX pin is set High and the LRCLK signal returns to the

normal clock operation. The speaker output is outputted through a soft-start when

released. (Auto recovery)

LRCLK (3pin)

ERROR (22pin)

Clock stop Clock recover

HiZ-Low

Protection start about

21μsec(fs=48kHz) clock stop

3.3V

t

OUT1P(14,15pin)

OUT1N(11,12pin)

OUT2P(26,27pin)

OUT2N(29,30pin)

Speaker output

Soft-start (Auto recovery)

21.5msec(fs=48kHz)

Figure 55. Sequence of Clock stop protection(LRCLK)

Not Recommended for

New Designs

Datasheet

30/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Application Circuit Example1

Stereo BTL Output, RL=8Ω, Vcc=10V to 16V

910 11 12 13 14 15 16

32

313029

2827

2625

●BOM List1

Stereo BTL Output, RL=8Ω, Vcc=10V to 16V

Parts Parts No. Value

Company

Product No. Rated

Voltage

Tolerance

Size

IC U1 － ROHM BD5452AMUV －－ 5.0mmx5.0mm

Inductor L11, L14, L26, L30 10µH

TOKO B1047AS-100M - (±20%) 7.6mm×7.6mm

Resistor R22 100kΩ

ROHM MCR03EZPJ104 1/10W

J(±5%) 1.6mm×0.8mm

Capacitor

C17, C23, C31 10uF

MURATA

GRM31CB11E106KA75L

25V B(±10%）

3.2mm×1.6mm

C6, C7 C8, C9 0.1uF

GRM188B11A104KA92D

10V B(±10%）

1.6mm×0.8mm

C11, C14, C26, C30

0.1uF

GRM188B11E104KA01D

25V B(±10%）

1.6mm×0.8mm

As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between

power supply and GND as an electric pathway for the regenerated current. Be sure that there is no problem with each

property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the

connected power supply does not have sufficient current absorption capacity, regenerative current will cause the

voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the

absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a

voltage clamp diode between the power supply and GND pins.

Figure 56. Application circuit1

Not Recommended for

New Designs

Datasheet

31/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Application Circuit Example 2

Monaural BTL Output, RL=8Ω, Vcc=10V to 16V

●BOM List2

Monaural BTL Output, RL=8Ω, Vcc=10V to 16V

Parts Parts No. Value Company

Product No. Rated

Voltage

Tolerance

Size

IC U1 － ROHM BD5452AMUV －－ 5.0mmx5.0mm

Inductor L11, L14 10µH TOKO B1047AS-100M - (±20%) 7.6mm×7.6mm

Resistor R22 100kΩ

ROHM MCR03EZPJ104 1/10W

J(±5%) 1.6mm×0.8mm

Capacitor

C17, C31 10uF

MURATA

GRM31CB11E106KA75L

25V B(±10%）

3.2mm×1.6mm

C6, C7 C8, C9 0.1uF GRM188B11A104KA92D

10V B(±10%）

1.6mm×0.8mm

C11, C14 0.1uF GRM188B11E104KA01D

25V B(±10%）

1.6mm×0.8mm

As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between

power supply and GND as an electric pathway for the regenerated current. Be sure that there is no problem with each

property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the

connected power supply does not have sufficient current absorption capacity, regenerative current will cause the

voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the

absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a

voltage clamp diode between the power supply and GND pins.

Figure 57. Application Circuit 2

Not Recommended for

New Designs

Datasheet

32/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

910 11 12 13 14 15 16

32

3130

29

28272625

●Application Circuit Example 3

Stereo BTL Output, RL=8Ω, Vcc=16V to 18V

※To prevent going over absolute maximum rating by the leap out of power supply and the linking of PWM output wave form,

please provide countermeasure shown below diagram (dot-line) when using at Vcc＞16V.

●BOM List 3

Stereo BTL Output, RL=8Ω, Vcc=16V to 18V

Parts Parts No. Value

Company

Product No. Rated

Tolerance

Size

IC U1 － ROHM BD5452AMUV －－ 5.0mmx5.0mm

Inductor L11, L14, L26, L30 10µH

TOKO B1047AS-100M - (±20%) 7.6mm×7.6mm

Resistor R22 100kΩ

ROHM MCR03EZPJ104 1/10W

J(±5%) 1.6mm×0.8mm

R11, R14, R26, R30 6.8Ω

MCR03EZPFL6R80 1/10W

F(±5%) 1.6mm×0.8mm

Capacitor

C17, C23, C31 10uF

MURATA

GRM31CB11E106KA75L

25V B(±10%）

3.2mm×1.6mm

C6, C7 C8, C9 0.1uF

GRM188B11A104KA92D

10V B(±10%）

1.6mm×0.8mm

C11, C14, C26, C30 0.1uF

GRM188B11A104KA01D

25V B(±10%）

1.6mm×0.8mm

C11B, C14B, C26B,

C30B 680pF

GRM188B11E681KA01

25V B(±10%）

1.6mm×0.8mm

Electrolytic

Capacitor

C17B 220µF

Panasonic

ECA1EMH221 25V ±20% φ8mm×11.5mm

As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between

power supply and GND as an electric pathway for the regenerated current. Be sure that there is no problem with each

property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the

connected power supply does not have sufficient current absorption capacity, regenerative current will cause the

voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the

absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a

voltage clamp diode between the power supply and GND pins.

Figure 58. Application Circuit Example 3

Not Recommended for

New Designs

Datasheet

33/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Application Circuit Example 4

Monaural BTL Output, RL=8Ω, Vcc=16V to 18V

※To prevent going over absolute maximum rating by the leap out of power supply and the linking of PWM output wave form,

please provide countermeasure shown below diagram (Red dot-line) when using at Vcc＞16V.

●BOM List 4

Monaural BTL Output, RL=8Ω, Vcc=16V to 18V

Parts Parts No. Value Company

Product No. Rated

Tolerance Size

IC U1 － ROHM BD5452AMUV －－ 5.0mmx5.0mm

Inductor L11, L14 10µH TOKO B1047AS-100M - (±20%) 7.6mm×7.6mm

Resistor R22 100k Ω ROHM MCR03EZPJ104 1/10W

J(±5%) 1.6mm×0.8mm

R11, R14 6.8Ω MCR03EZPFL6R80 1/10W

F(±5%) 1.6mm×0.8mm

Capacitor

C17, C31 10uF

MURATA

GRM31CB11E106KA75L

25V B(±10%） 3.2mm×1.6mm

C6, C7 C8, C9 0.1uF GRM188B11A104KA92D

10V B(±10%） 1.6mm×0.8mm

C11, C14 0.1uF GRM188B11A104KA01D

25V B(±10%） 1.6mm×0.8mm

C11B, C14B 680pF GRM188B11E681KA01

25V B(±10%） 1.6mm×0.8mm

Electrolytic

Capacitor

C17B 220µF Panasonic

ECA1EMH221 25V ±20% φ8mm×11.5mm

As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between

power supply and GND as an electric p

athway for the regenerated current. Be sure that there is no problem with each

property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the

connected power supply does not have sufficient current

absorption capacity, regenerative current will cause the voltage

on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the absolute

maximum ratings. It is recommended to implement a physical safety measur

e such as the insertion of a voltage clamp

diode between the power supply and GND pins.

SP 1ch

C14

L14

C11

L11

10μH

0.1μF

0.1μF (8Ω)

GNDP1

C14B

R14

6.8Ω

R11

6.8Ω

C11B

880pF

220μF

C17B

VCC: 16V～18V

880pF

12345678

I/F

I2S I/F

Driver

FET

1P

Driver

FET

1N

910 11 12 13 14 15 16

24 23 22 21 20 19 18 17

32

313029

2827

2625

Driver

FET

2P

Driver

FET

2N ×8 Over

Sampling Digital Filter

PWM

Modulator

VCCP1

GNDP1GNDP2

VCCP2

ERROR

100kΩ

R22

REG3

VCCA

C31

10μF

GNDA

LRCLKBCLKSDATA

MCLK REG3

0.1μF

C8

FILA

FILP

REG_G

0.1μF

C7

0.1μF

C6

GNDP2

PLIMT1 PLIMT0CLK_MOD

C17

10μF

GNDP1

RSTX MUTEX

I/F

0.1μF

C9

OUT1N

OUT1P

3.3V

VSS

3.3V

VSS

3.3V

VSS

Under Voltage Protection

Over Voltage Protection

Clock Stop Protection

Output Short Protection

Output DC Voltage Protection

High Temperature Protection

Figure 59. Application Circuit Example 4

Not Recommended for

New Designs

Datasheet

34/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●About circuit board layout

Be careful of the following order of priority, and design a circuit board layout.

①C13・C27・C31(10uF) put shortest compared with VCC and GND.

②C6・C7・C8・C9(0.1uF) put shortest compared with VCC and GND.

③The thermal pattern on the back connected with the GND.

④Each GND line connected by one point without common impedance.

⑤Each power supply and each GND are divided

⑥GND pattern of both side connected with the a lot of VIA electric contacts to lower the impedance of GND.

⑦GND area of the heat radiation area widen to improve the heat radiation ability.

Reference：ROHM designed 4 layer board

Figure 60. ROHM designed 4layer board

Not Recommended for

New Designs

Datasheet

35/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

Reference：ROHM designed 4 layer board SilkScreen

ROHM designed 4 layer board Copper Layer

Figure 61. Top Layer Silk Screen (Top View)

Figure 62. Bottom Layer Silk Screen (Top View)

Figure 63. Top Copper Layer (Top View) Figure 64. Mid Copper Layer1 (Top View)

Figure 66. Bottom Copper Layer (Top View)

Figure 65. Mid Copper Layer2 (Top View)

Not Recommended for

New Designs

Datasheet

36/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●About the two pieces use of BD5452AMUV

Be careful of the following point, when you have two BD5452AMUVs used at the same time.

It is charged with electricity to GND of LC-Filter for the SW element removal. When you have two BD5452AMUVs used at

the same time and PWM output synchronized , there is common impedance in GND of Filter, the GND electric potential is

raised, and it becomes the aggravation cause of the noise. The GND of Filter is to short in one point when you use two

BD5452AMUVs at the same time. There is no mechanism of the phase control in BD5452AMUV.

●How to select an application parts

1) Output LC Filter Circuit

An output filter is required to eliminate radio-frequency components exceeding the audio-frequency region supplied

to a load (speaker). Because this IC uses sampling clock frequencies from 256kHz(fs=32kHz) to 384kHz(fs=48kHz)

in the output PWM signals, the high-frequency components must be appropriately removed. This section takes an

example of an LC type LPF shown below, in which coil L and capacitor C compose a differential filter with an

attenuation property of -12dB/oct. A large part of switching currents flow to capacitor C, and only a small part of the

currents flow to speaker RL. This filter reduces unwanted emission this way. In addition, coil L and capacitor Cg

compose a filter against in-phase components, reducing unwanted emission further.

RL

C

L

C

L

11,12

or

29,30

14,15

or

26,27

Figure 69. Output LC filter

Figure 67. Output LC filter Figure 68. circuit at the time of the two use

Not Recommended for

New Designs

Datasheet

37/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

Following presents output LC filter constants with typical load impedances.

RL L C

4Ω 10µH 0.47µF

6Ω 10µH 0.15µF

8Ω 10µH 0.1µF

Use coils with a low direct-current resistance and with a sufficient margin of allowable currents. A high

direct-current resistance causes power losses. In addition, select a closed magnetic circuit type product in normal

cases to prevent unwanted emission.

Use capacitors with a low equivalent series resistance, and good impedance characteristics at high frequency ranges

(100kHz or higher). Also, select an item with sufficient withstand voltage because flowing massive amount of

high-frequency currents is expected.

2) The value of the LC filter circuit computed equation

The output LC filter circuit of BD5452AMUV is as it is shown in Figure 70. The LC filter circuit of Figure 70 is thought

to substitute it like Figure 71 on the occasion of the computation of the value of the LC filter circuit.

Figure 70. Output LC filter 1 Figure 71. Output LC filter 2

The transfer function H(s) of the LC filter circuit of Figure 71 becomes the following.

The ω and Q become the followings here.

Therefore, L and C become the followings.

The RL and L should be made known, and fCL is set up, and C is decided.

22

2

2Q

11

1

)(

ω

++

=

++

=ss

LC

s

CR

s

LC

sH

LC

1

=

2

ω

L

C

R

2

1

=

L

C

R=Q L

Qf4 R

=

C

1

=L CL

L

2π

ωLCLRf Q

=

R

Q

=C πω

CL

f2= πω LC2 1

=f

CL

π

Not Recommended for

New Designs

Datasheet

38/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

3) The settlement of the L value of the coil

A standard for selection of the L value of a coil to use is to take the following back anti-matter into

consideration except for the factor such as a low castigation, miniaturization, pale pattern. It is being made

L=10uH with BD5452AMUV in consideration of a balance of the total.

①When L value was made small.

(1) Circuit electric currents increase without a signal. And, efficiency in the low output gets bad.

(2) Direct current resistance value is restrained small when the coil of other L value and size are made the same.

Therefore, maximum output is easy to take out. And, it can be used in the low power supply voltage because DC

electric current (allowable electric current) value can be taken greatly.

②When L value was made large.

(1) Circuit electric current is restrained low without a signal. Efficiency in the low output improves.

(2) Direct current resistance value grows big when the coil of other L value and size are made the same. Therefore,

maximum output is hard to take out. And, because it becomes small, use becomes difficult 【 the DC electric

current (allowable electric current) value 】 in the low power supply voltage, too.

4) The settlement of the fCL

As for the settlement of the fixed number of the LC filter circuit, it is taken into consideration about two points of the

following, and set up.

①The PWM sampling frequency fPWM (=8fS) of BD5452AMUV is set up in 384kHz (@fs=48kHz).

It is set up with fc < fPWM to restrain career frequency omission after the LC filter circuit.

②When fc is lowered too much, the voltage profit of the voice obi stage (especially, the neighborhood of 20kHz)

declines in the speaker output frequency character of the difference movement mode.

And, the speaker output frequency character of the difference movement mode becomes the following.

RL=8Ω RL=6Ω RL=4Ω

L[uH]

C[uF]

fc[kHz]

Q L[uH]

C[uF]

fc[kHz]

Q L[uH]

C[uF]

fc[kHz]

Q

10

0.1 75.32

0.40

10

0.1 51.01

0.30

10

0.1 32.19

0.20

0.15 80.85

0.49 0.15 54.76

0.37 0.15 33.35

0.24

0.22 86.79

0.59 0.22 56.73

0.44 0.22 34.55

0.30

0.33 89.92

0.73 0.33 63.1 0.54 0.33 35.8 0.36

0.47 86.79

0.87 0.47 66.68

0.65 0.47 38.37

0.43

15

0.1 46.99

0.33

15

0.1 33.11

0.24

15

0.1 21.68

0.16

0.15 49.66

0.40 0.15 34.36

0.30 0.15 22.08

0.20

0.22 53.46

0.48 0.22 35.65

0.36 0.22 22.49

0.24

0.33 57.54

0.59 0.33 38.37

0.44 0.33 22.91

0.30

0.47 59.7 0.71 0.47 41.3 0.53 0.47 23.77

0.35

22

0.1 30.76

0.27

22

0.1 22.49

0.20

22

0.1 14.72

0.13

0.15 31.92

0.33 0.15 22.91

0.25 0.15 14.72

0.17

0.22 33.73

0.40 0.22 23.77

0.30 0.22 15 0.20

0.33 36.31

0.49 0.33 24.66

0.37 0.33 15.28

0.24

0.47 39.08

0.58 0.47 26.06

0.44 0.47 15.56

0.29

Not Recommended for

New Designs

Datasheet

39/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

5) About the EMI countermeasure

It can be confirmed with Chip Common Mode Choke Coil( DLY5ATN401 ) manufactured by Murata manufacturing,

Chip inductor LCC3225T2R2MR manufactured by TAIYOYUDEN as a part EMI countermeasure except for the output

LC filter recommended with P.30/46～P.33/46.

●Application Circuit Example5（Stereo BTL Output, RL=8Ω, VCC=10V～16V）

Figure 72. Application Circuit Example5

●BOM list 5（Stereo BTL Output, RL=8Ω, VCC=10V～16V）

Parts Parts No. Value Company Product No. Rated

Voltage

Tolerance Size

IC U1 － ROHM BD5452AMUV －－ 5.0mmx5.0mm

Inductor L11, L14, L26, L30 2.2µH Taiyo

Yuden LCC3225T2R2MR 1.5A (±20%) 3.2mm×2.5mm

Resistor R22 100kΩ ROHM MCR03EZPJ104 1/10W J(±5%) 1.6mm×0.8mm

Capacitor

C17, C23, C31 10uF

MURATA

GRM31CB11E106KA75L 25V B(±10%） 3.2mm×1.6mm

C6, C7 C8, C9 0.1uF GRM188B11A104KA92D 10V B(±10%） 1.6mm×0.8mm

C11, C14, C26, C30

1000pF

GRM188B11H102KA01D

50V B(±10%） 1.6mm×0.8mm

As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between

power supply and GND as an electric pathway for the regenerated current. Be sure that there is no problem with each

property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the

connected power supply does not have sufficient current absorption capacity, regenerative current will cause the

voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the

absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a

voltage clamp diode between the power supply and GND pins.

12345678

Control I/F

I2S I/F

Driver

FET

1P

Driver

FET

1N

910 11 12 13 14 15 16

24 23 22 21 20 19 18 17

32

31302928272625

Driver

FET

2P

Driver

FET

2N

Under Voltage Protection

Over Voltage Protection

Clock Stop Protection

High Temperature Protection

Output Short Protection

Output DC Voltage Protection

×8 Over

Sampling Digital Filter

PWM

Modulator

VCCP1

GNDP1

Feedback

FeedbackFeedback

Feedback

GNDP2

Feedback

FeedbackFeedback

Feedback

FeedbackFeedback

Feedback

FeedbackFeedback

Feedback

VCCP2

ERROR

100kΩ

R22

REG3

VCCA

VCCA: 10V～16V

C31

10μF

GNDA

Digital Audio Source

LRCLKBCLKSDATA

MCLK REG3

0.1μF

C8

FILA

FILP

REG_G

0.1μF

C7

0.1μF

C6

μ-con

VCCP2: 10V～16V

C26

L26

C30

L30

1000pF

C23

10μF

GNDP2

PLIMT1 PLIMT0CLK_MOD

VCCP1: 10V～16V

C14

L14

C11

L11

1000pF

C17

10μF

GNDP1

RSTX MUTEX

To Control I/F

0.1μF

C9

OUT1N

OUT1P

OUT2N

OUT2P

SP 2ch

(Rch)

(8Ω)

SP 1ch

(Lch)

(8Ω)

3.3V

VSS

3.3V

VSS

3.3V

VSS

Taiyo Yuden L=2.2uH (Chip inductor)

Not Recommended for

New Designs

Datasheet

40/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●

●Application Circuit Example 6（

（（

（Stereo BTL Output, RL=8Ω

ΩΩ

Ω, VCC=10V～

～～

～16V）

））

）

Figure 73. Application Circuit Example6

●BOM list 6（Stereo BTL Output, RL=8Ω, VCC=10V～16V）

Parts Parts No. Value Company Product No. Rated

Voltage

Tolerance Size

IC U1 － ROHM BD5452AMUV －－ 5.0mmx5.0mm

Common

Mode

Choke Coil

L11, L26 DC

0.024Ω

MURATA DLY5ATN401SQ2 30V (±40%) 3.6mmx5.0mm

Resistor R22 100kΩ ROHM MCR03EZPJ104 1/10W J(±5%) 1.6mm×0.8mm

Capacitor

C17, C23, C31 10uF

MURATA

GRM31CB11E106KA75L 25V B(±10%） 3.2mm×1.6mm

C6, C7 C8, C9 0.1uF GRM188B11A104KA92D 10V B(±10%） 1.6mm×0.8mm

C11, C11_2,C14,

C26, C26_2,C30 1000pF

GRM188B11H102KA01D

50V B(±10%） 1.6mm×0.8mm

As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between

power supply and GND as an electric pathway for the regenerated current. Be sure that there is no problem with each

property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the

connected power supply does not have sufficient current absorption capacity, regenerative current will cause the

voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the

absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a

voltage clamp diode between the power supply and GND pins.

12345678

Control I/F

I2S I/F

Driver

FET

1P

Driver

FET

1N

910 11 12 13 14 15 16

24 23 22 21 20 19 18 17

32

3130

29

28272625

Driver

FET

2P

Driver

FET

2N

Under Voltage Protection

Over Voltage Protection

Clock Stop Protection

High Temperature Protection

Output Short Protection

Output DC Voltage Protection

×8 Over

Sampling Digital Filter

PWM

Modulator

VCCP1

GNDP1

Feedback

FeedbackFeedback

Feedback

GNDP2

Feedback

FeedbackFeedback

Feedback

FeedbackFeedback

Feedback

FeedbackFeedback

Feedback

VCCP2

ERROR

100kΩ

R22

REG3

VCCA

VCCA: 10V～16V

C31

10μF

GNDA

Digital Audio Source

LRCLKBCLKSDATA

MCLK REG3

0.1μF

C8

FILA

FILP

REG_G

0.1μF

C7

0.1μF

C6

μ-con

VCCP2: 10V～16V

C26

L26

C30

1000pF

C23

10μF

GNDP2

PLIMT1 PLIMT0CLK_MOD

VCCP1: 10V～16V

C17

10μF

RSTX MUTEX

To Control I/F

0.1μF

C9

OUT2N

OUT2P

SP 2ch

(Rch)

(8Ω)

3.3V

VSS

3.3V

VSS

3.3V

VSS

C26_2

1000pF

C14

L11

C11

1000pF

GNDP1

OUT1N

OUT1P

SP 1ch

(Lch)

(8Ω)

C11_2

1000pF

Murata common mode choke coil

Not Recommended for

New Designs

Datasheet

41/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●

●Measurement data

（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,）

Measured by ROHM designed 4 layer board.

Figure 74. Frequency response

Figure 75. No input signal, test output noise (FFT)

-140

-120

-100

-80

-60

-40

-20

0

10 100 1k 10k 100k

Freq [Hz]

NoiseFFT [dBV]

10uH-OUT1

10uH-OUT2

2.2uH-OUT1

2.2uH-OUT2

DLY401-OUT1

DLY401_OUT2

No signal

10

12

14

16

18

20

22

24

26

28

30

10 100 1k 10k 100k

Freq [Hz]

Voltage Gain [dB]

10uH-OUT1

10uH-OUT2

2.2uH-OUT1

2.2uH-OUT2

DLY401-OUT1

DLY401-OUT2

Po=1W

Not Recommended for

New Designs

Datasheet

42/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●

●Measurement data

（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,

Output LC filter：L=10uH, C=0.1uF）Measured by ROHM designed 4 layer board.

Figure 76. THD+N – OUTPUT POWER

Figure 77. THD+N – Frequency

THD+N =1% ：

：：

：8.5W

THD+N=10%：

：：

：11.0W

0.01

0.1

1

10

100

0.01 0.1 1 10

Po [W/CH]

THD+N [%]

10uH-OUT1

10uH-OUT2

2.2uH-OUT1

2.2uH-OUT2

DLY401-OUT1

DLY401-OUT2

ｆ=1ｋHz

BW=20～20kHz AES17

0.01

0.1

1

10

100

10 100 1k 10k 100k

Freq [Hz]

THD+N [%]

10uH-OUT1

10uH-OUT2

2.2uH-OUT1

2.2uH-OUT2

DLY401-OUT1

DLY401-OUT2

Po=1W

BW=20～20kHz AES17

Not Recommended for

New Designs

Datasheet

43/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●

●Measurement data

（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,

Output LC filter：L=10uH, C=0.1uF）Measured by ROHM designed 4 layer board.

Figure 78. Crosstalk – Frequency

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

10 100 1k 10k 100k

Freq [Hz]

Crosstalk [dB]

10uH-OUT2 to OUT1

10uH-OUT1 to OUT2

2.2uH-OUT2 to OUT1

2.2uH-OUT1 to OUT2

DLY401-OUT2 to OUT1

DLY401-OUT1 to OUT2

Po=1W

BW=20～20kHz AES17

Not Recommended for

New Designs

Datasheet

44/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

6) The settlement of the snubber

① Measure the spike resonance frequency f1 of the PWM output wave shape (When it stands up.) by using

FET probe in the OUT terminal. (Figure 80) The FET probe is to monitor very near pin and shorten ground lead

at the time of that.

② Measure resonance frequency f2 of the spike as a snubber circuit fixed number R=0Ω（Only with the condenser

C, to connect GND） At this time, the value of the condenser C is adjusted until it becomes half of the frequency

(2f2=f1) of the resonance frequency f1 of ①. The value of C which it could get here is three times of the parasitic

capacity Cp that a spike is formed. (C=3Cp)

③ Parasitic inductance Lp is looked for at the next formula.

④ The character impedance Z of resonance is looked for from the parasitic capacity Cp and the parasitism

inductance Lp at the next formula.

⑤ A snubber circuit fixed number R is set up in the value which is the same as the character impedance Z.

A snubber circuit fixed number C is set up in the value of 4-10 times of the parasitic capacity Cp. (C=4Cp～

10Cp) Decide it with trade-off with the character because switching electric currents increase when the value of C is

enlarged too much.

Figure 80. snubber schematic

( )

p

Cf 2

1

p2

1

L

π

=

p

C

L

=Z

Figure 79. PWM Output waveform

（measure of spike resonance frequency

spike resonance frequency

5nsec/div

Not Recommended for

New Designs

Datasheet

45/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Power Dissipation

Measuring instrument：TH-156（Shibukawa Kuwano Electrical Instruments Co., Ltd.）

Measuring conditions：Installation on ROHM’s board

Board size：74.2mm×74.2mm×1.6mm（with thermal via on board）

Material：FR4

・The board on exposed heat sink on the back of package are connected by soldering.

PCB①：4- layer board (Top and bottom layer back copper foil size: 20.2mm2, 2nd and 3rd layer

back copper foil size: 5505mm2) , θja = 36.48℃/W

PCB②：4-layer board（back copper foil size: 5505mm2）, θja = 26.08℃/W

Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating conditions.

This IC exposes its frame of the backside of package. Note that this part is assumed to use after providing heat dissipation

treatment to improve heat dissipation efficiency. Try to occupy as wide as possible with heat dissipation pattern not only on

the board surface but also the backside.

Class D speaker amplifier is high efficiency and low heat generation by comparison with conventional Analog power

amplifier. However, In case it is operated continuously by maximum output power, Power dissipation (Pdiss) may exceed

package dissipation. Please consider about heat design that Power dissipation (Pdiss) does not exceed Package

dissipation (Pd) in average power (Poav). （Tjmax ：Maximum junction temperature=150℃, Ta ：Peripheral temperature[℃],

θja ：Thermal resistance of package[℃/W], Poav：Average power[W], η：Efficiency）

Package dissipation : Pd（W）=（Tjmax - Ta）／θja

Power dissipation : Pdiss（W）= Poav ×（1／η- 1）

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

0 25 50 75 100 125 150

Ta [℃]

Pd [W]

PCB② 4.56W

PCB① 3.26W

VQFN032V5050

Figure 81. Allowable Power Dissipation

Not Recommended for

New Designs

Datasheet

46/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Pin function explanation (Provided pin voltages are typ. Values) (1/2)

Pin No. Pin name

Pin voltage Pin explanation Internal equivalence circuit

4

RSTX 0V

Reset pin for Digital circuit

H: Reset OFF

L: Reset ON

5 MUTEX 0V Speaker output mute control pin

H: Mute OFF

L: Mute ON

1

2

3

32

SDATA

BCLK

LRCLK

MCLK

Digital audio signal input pin

19

20 PLIMT0

PLIMT1 Power limit setting terminal

21 CLK_MOD

MCLK setting terminal

10 GNDA 0V GND pin for Analog signal

－

8 FILP 1.6 to 2.4V Bias pin for PWM signal

Please connect the capacitor.

7 REG3 3.3V Internal power supply pin for Digital circuit

Please connect the capacitor.

22

ERROR

－ Error flag pin

Please connect pull-up resister.

H: While Normal

L: While Error

6 REG_G 5.0V Internal power supply pin for Gate driver

Please connect the capacitor.

Not Recommended for

New Designs

Datasheet

47/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Pin function explanation (Provided pin voltages are typ. Values) (2/2)

Pin No. Pin name

Pin voltage Pin explanation Internal equivalence circuit

9

FILA

2.5V Bias pin for PWM signal.

Please connect the capacitor.

31 VCCA Vcc Power supply pin for Analog signal

－

23,24 VCCP2 Vcc

Power supply pin for ch2 PWM signal

Please connect the capacitor.

26,27

OUT2P Vcc to 0V

Output pin of ch2 positive PWM

Please connect to Output LPF.

25,28 GNDP2 0V GND pin for ch2 PWM signal

29,30

OUT2N Vcc to 0V

Output pin of ch2 negative PWM

Please connect to Output LPF.

11,12

OUT1N Vcc to 0V Output pin of ch1 negative PWM

Please connect to Output LPF.

13,16 GNDP1

0V GND pin for ch1 PWM signal

14,15

OUT1P Vcc to 0V Output pin of ch1 positive PWM

Please connect to Output LPF.

17,18 VCCP1 － Power supply pin for ch1 PWM signal

Please connect the capacitor.

●Terminal setting

1) RSTX pin, MUTEX pin function

RSTX

MUTEX

Normalcy Error detecting

PWM output

OUT1P, 1N, 2P, 2N

ERROR

output PWM output

OUT1P, 1N, 2P, 2N

ERROR

output

L L/H HiZ_L

(Reset_mode) H HiZ_L

(Reset_mode) H

H L HiZ_L

(MUTE_ON) H HiZ_L

(MUTE_ON) L

H H Normal Operation

(MUTE_OFF) H HiZ_L

(MUTE_ON) L

※RSTX(4pin)terminal, MUTEX(5pin)terminal are internally pulled down by 50 kΩ(Typ.)

※With RSTX=L data of every register within IC (I2S / I/F part, ×8 over sampling digital filter part, latch circuit when detecting ERROR) becomes unnecessary.

Not Recommended for

New Designs

Datasheet

48/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

C

rDC

Cg

RLrDC

Cg

VCC

rDS

VCC

rDS

ON

OFF

2) CLK_MOD pin function

CLK_MOD MCLK input

L 256fs

H 512fs

Because care for the POP sound isn't being done, Make it MUTE condition, and change CLK_MOD terminal

logic when you change the mode during the movement.

3) PLIMT pin function

PLIMT1 PLIMT0 Gain Setting(BTL) Condition of power limit

L L 26dB off

L H 20dB Min. 10 W(at 8Ω)

H L － ※ － ※

H H 17dB Min. 5 W(at 8Ω)

※ Don’t use this condition.

Because care for the POP sound isn't being done, Make it MUTE condition, and change CLK_MOD terminal

logic when you change the mode during the movement.

And, PowerLimit function of BD5452AMUV is decided as follows. Set it up corresponding to the used speaker

because maximum output value varies according to the speaker load resistance value as mentioned in the

mention in the following.

( )

L

LDCDS

L

G

V

THDO R

Rrr R

P

BTL

IN2

20

%)1(

2

1010 













++

××













=













=

( )

LDCDS

L

G

DSPOSPO Rrr R

VV BTL

++

××= 











2

10 20

__

VIN ： I2S Input level [dBFS]

GBTL ： Gain Setting [dB]

RL ： Load resistance [Ω]

rDS ： Resistance of FET [Ω]

（TYP.=0.3Ω）

rDC ： DC resistance of Coil [Ω]

Figure.75 Schematic of output

equivalent

Not Recommended for

New Designs

Datasheet

49/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Notes for use

1 ) Absolute maximum ratings

Use of the IC in excess of absolute maximum ratings such as the applied voltage or operating temperature range may

result in IC damage. Assumptions should not be made regarding the state of the IC (short mode or open mode) when

such damage is suffered. A physical safety measure such as a fuse should be implemented when use of the IC in a

special mode where the absolute maximum ratings may be exceeded is anticipated.

2 ) Power supply lines

As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between

power supply and GND as an electric pathway for the regenerated current. Be sure that there is no problem with each

property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the

connected power supply does not have sufficient current absorption capacity, regenerative current will cause the

voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the

absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a

voltage clamp diode between the power supply and GND pins.

3 ) GND potential（Pin 10, 13, 16, 25, 28）.

Any state must become the lowest voltage about GND terminal and VSS terminal.

4 ) Input terminal

The parasitic elements are formed in the IC because of the voltage relation. The parasitic element operating causes the

wrong operation and destruction. Therefore, please be careful so as not to operate the parasitic elements by

impressing to input terminals lower voltage than GND and VSS. Please do not apply the voltage to the input terminal

when the power-supply voltage is not impressed.

5 ) Actions in strong magnetic field

Use caution when using the IC in the presence of a strong magnetic field as doing so may cause the IC to malfunction.

6 ) Thermal shutdown circuit

This product is provided with a built-in thermal shutdown circuit. When the thermal shutdown circuit operates, the

output transistors are placed under open status. The thermal shutdown circuit is primarily intended to shut down the IC

avoiding thermal runaway under abnormal conditions with a chip temperature exceeding Tjmax = 150℃.

7 ) Shorts between pins and miss installation

When mounting the IC on a board, pay adequate attention to orientation and placement discrepancies of the IC. If it is

missing installed and the power is turned on, the IC may be damaged. It also may be damaged if it is shorted by a

foreign substance coming between pins of the IC or between a pin and a power supply or a pin and a GND.

8 ) Power supply on/off （Pin 17, 18, 23, 24, 31）

In case power supply is started up, RSTX（Pin 4）and MUTEX(Pin 5) always should be set Low. And in case power

supply is shut down, it should be set Low likewise. Then it is possible to eliminate pop noise when power supply is

turned on/off. And also, all power supply terminals should start up and shut down together.

9 ) ERROR terminal（Pin 22）

An error flag is outputted when Output short protection and DC voltage protection in the speaker are operated. These

flags are the function which the condition of this product is shown in.

10) Precautions for Speaker-setting

If the impedance characteristics of the speakers at high-frequency range while increase rapidly, the IC might not have

stable-operation in the resonance frequency range of the LC-filter. Therefore, consider adding damping-circuit, etc.,

depending on the impedance of the speaker

11) About short to VCC or GND after the LC filter

Though this IC has a short protection function, when short to VCC or GND after the LC filter a short protection function

operate by over-electric current. But, Be fully careful because over/undershoot which exceeds a maximum standard by

back electromotive force of the coil absolutely occurs and sometimes reaches it for the destruction.

12) About REG terminals

The REG terminal of BD5452AMUV doesn't aim at supplying it to the outside.

Therefore, don't connect the one except for Pullup of the condenser for the stabilization and the ERROR

terminal.

Status of this document

The Japanese version of this document is formal specification. A customer may use this translation version

only for a reference to help reading the formal version.

If there are any differences in translation version of this document formal version takes priority

Not Recommended for

New Designs

Datasheet

50/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Ordering Information

B

D

5 4 5 2 A

M

U V

E 2

Part Number

Package

MUV: VQFN032V5050

Packaging and forming specification

E2: Embossed tape and reel

●Physical Dimension Tape and Reel Information

●Marking Diagram(s)(TOP VIEW)

(Unit : mm)

VQFN032V5050

0.08 S

S

1.0MAX

(0.22)

0.02+0.03

-

0.02

24

81

9

32

16

25 17

0.5

0.75

0.4±0.1

3.4±0.1

0.25 +0.05

-

0.04

C0.2

5.0±0.1

1PIN MARK

∗ Order quantity needs to be multiple of the minimum quantity.

Embossed carrier tapeTape

Quantity

Direction

of feed The direction is the 1pin of product is at the upper left when you hold

reel on the left hand and you pull out the tape on the right hand

2500pcs

E2

( )

Direction of feed

Reel 1pin

VQFN032V5050(TOP VIEW)

D 5 4 5 2 A

Part Number Marking

LOT Number

1PIN MARK

Not Recommended for

New Designs

Datasheet

51/51 TSZ02201-0V1V0E954520-1-

2

04.Oct.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BD5452AMUV

●Revision History

Date Revision Changes

04.Oct.2012

001 New Release

Not Recommended for

New Designs

Datasheet

Notice - GE Rev.002

Notice

Precaution on using ROHM Products

1. Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment,

OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you

intend to use our Products in devices requiring extremely high reliability (such as medical equipment (Note 1), transport

equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car

accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or

serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance.

Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any

damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific

Applications.

(Note1) Medical Equipment Classification of the Specific Applications

JAPAN USA EU CHINA

CLASSⅢ CLASSⅢ CLASSⅡb CLASSⅢ

CLASSⅣ CLASSⅢ

2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor

products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate

safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which

a failure or malfunction of our Products may cause. The following are examples of safety measures:

[a] Installation of protection circuits or other protective devices to improve system safety

[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure

3. Our Products are designed and manufactured for use under standard conditions and not under any special or

extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way

responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any

special or extraordinary environments or conditions. If you intend to use our Products under any special or

extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of

product performance, reliability, etc, prior to use, must be necessary:

[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents

[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust

[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,

H2S, NH3, SO2, and NO2

[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves

[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items

[f] Sealing or coating our Products with resin or other coating materials

[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of

flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning

residue after soldering

[h] Use of the Products in places subject to dew condensation

4. The Products are not subject to radiation-proof design.

5. Please verify and confirm characteristics of the final or mounted products in using the Products.

6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,

confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power

exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect

product performance and reliability.

7. De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual

ambient temperature.

8. Confirm that operation temperature is within the specified range described in the product specification.

9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in

this document.

Precaution for Mounting / Circuit board design

1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product

performance and reliability.

2. In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the

ROHM representative in advance.

For details, please refer to ROHM Mounting specification

Not Recommended for

New Designs

Datasheet

Notice - GE Rev.002

Precautions Regarding Application Examples and External Circuits

1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the

characteristics of the Products and external components, including transient characteristics, as well as static

characteristics.

2. You agree that application notes, reference designs, and associated data and information contained in this document

are presented only as guidance for Products use. Therefore, in case you use such information, you are solely

responsible for it and you must exercise your own independent verification and judgment in the use of such information

contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses

incurred by you or third parties arising from the use of such information.

Precaution for Electrostatic

This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper

caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be

applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,

isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).

Precaution for Storage / Transportation

1. Product performance and soldered connections may deteriorate if the Products are stored in the places where:

[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2

[b] the temperature or humidity exceeds those recommended by ROHM

[c] the Products are exposed to direct sunshine or condensation

[d] the Products are exposed to high Electrostatic

2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period

may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is

exceeding the recommended storage time period.

3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads

may occur due to excessive stress applied when dropping of a carton.

4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of

which storage time is exceeding the recommended storage time period.

Precaution for Product Label

QR code printed on ROHM Products label is for ROHM’s internal use only.

Precaution for Disposition

When disposing Products please dispose them properly using an authorized industry waste company.

Precaution for Foreign Exchange and Foreign Trade act

Since our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act,

please consult with ROHM representative in case of export.

Precaution Regarding Intellectual Property Rights

1. All information and data including but not limited to application example contained in this document is for reference

only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any

other rights of any third party regarding such information or data. ROHM shall not be in any way responsible or liable

for infringement of any intellectual property rights or other damages arising from use of such information or data.:

2. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any

third parties with respect to the information contained in this document.

Other Precaution

1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.

2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written

consent of ROHM.

3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the

Products or this document for any military purposes, including but not limited to, the development of mass-destruction

weapons.

4. The proper names of companies or products described in this document are trademarks or registered trademarks of

ROHM, its affiliated companies or third parties.

Not Recommended for

New Designs

DatasheetDatasheet

Notice – WE Rev.001

General Precaution

1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.

ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny

ROHM’s Products against warning, caution or note contained in this document.

2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior

notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s

representative.

3. The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all

information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or

liable for an y damages, expenses or losses incurred by you or third parties resulting from inaccur acy or errors of or

concerning such information.

Not Recommended for

New Designs