BA5962FVM
Optical disc ICs
1/5
Power driver for CD player
BA5962FVM
BA5962FVM is 1ch BTL power driver IC for CD / DVD. MSOP8 package enables the smallest configuration.
This IC enables reduction of external parts, built-in level shift circuit.
!
!!
!Applications
CD player
!
!!
!Features
1) 1ch BTL driver for CD / DVD.
2) MSOP8 package enables the smallest configuration.
3) Built in level shift circuit.
4) Built in thermal-shut-down circuit.
!
!!
!Absolute maximum ratings (Ta=25°C)
Parameter Symbol Limits Unit
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
VCC
Pd
Topr
Tstg
18
0.55
−35~+85
−55~+150
V
W
°C
°C
∗ PCB (70mm×70mm×1.6mm, glass epoxy) mounting.
Reduce power by 4.4mW for each degree above 25°C.
!
!!
!Recommended operating conditions (Set the power supply voltage taking allowable dissipation into considering)
Parameter Symbol Min. Typ. Max. Unit
3510 VVCC
Power supply voltage
BA5962FVM
Optical disc ICs
2/5
!
!!
!Block diagram
+−
STAND-BY
LEVEL SHIFT
+−
5
4
6
3
7
2
8
1
TSD : Thermal shut down
25k
50k
!
!!
!Pin descriptions
Pin No. Pin name Functions
1
2
3
4
STBY
BIAS
IN 1
IN 2
Stand-by control input
Bias input
Driver input 1 (Low gain)
Driver input 2 (High gain)
Pin No. Pin name Functions
5
6
7
8
GND
OUT−
OUT+
V
CC
GND
Driver negative output
Driver positive output
Power supply input
!
!!
!Input output circuits
1pin
100k
100k
V
CC
100k
25k
50k
2pin
V
CC
V
CC
10k
10k
100k
positive output
7pin
negative output
6pin
V
CC
3pin
V
CC
50k
4pin
V
CC
25k
Pre V
CC
Driver input Stand-by control input
BIAS inputDriver output
BA5962FVM
Optical disc ICs
3/5
!
!!
!Electrical characteristics (unless otherwise noted, Ta=25°C, VCC=5V, VBIAS=1.65V, RL=50Ω)
Parameter Symbol Min. Typ. Max. Unit Conditions Measuring
circuit
Quiescent current without signal
<Driver block>
Input voltage range
Output offset voltage
Maximum output voltage amplitude
Closed circuit gain 1 (Input IN1)
Closed circuit gain 2 (Input IN2)
Srand-by ON voltage
Srand-by OFF voltage
Bias terminal voltage drop mute ON-level voltage
Bias terminal voltage drop mute OFF-level voltage
I
Q
V
INR
V
OOF
V
OM
G
VC
1
G
VC
2
V
STON
V
STOFF
V
BMON
V
BMOFF
−
0
−40
3.7
10
16
−
2.0
−
1.0
3
∼
−
4.1
12
18
−
−
−
−
6
V
CC
40
−
14
20
0.5
−
0.4
−
mA
V
mV
V
dB
dB
V
V
V
V
Fig.1
Fig.1
Fig.1
Fig.1
Fig.1
Fig.1
Fig.1
Fig.1
Fig.1
Fig.1
V
IN
=
BIAS=
1.65V
V
IN
=1.35V, 1.95V
V
IN
=1.35V, 1.95V
This product in not designed for protection against radioactive rays.
!
!!
!Measuring circuit
+−
STAND-BY
LEVEL SHIFT
+
+
+
−
5
4
6
3
7
2
8
1
25k
50k
VIN1
RL
Fig.1
VST
0.1µ
50Ω
V
O
I
Q
V
CC
=5V
VBIAS
=1.65V VIN1
VIN2
VIN2
A
V
BA5962FVM
Optical disc ICs
4/5
1. Switch table
Symbol Switch Input
VIN 1 VIN 2 VIN
VST Measuring point
IQ
Voof
VOM 1
VOM 2
GVC 1
GVC 2
VSTOFF
VSTON
OFF
ON
ON
OFF
ON
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
RL
OFF
ON
ON
ON
ON
ON
ON
ON
−
1.65V
∗1
∗1
±0.3V
±0.3V
5V
5V
∗1
2.0V
2.0V
2.0V
2.0V
2.0V
2.0V
0.5V
2.0V
VIN=0V and 5V
∗1VIN=0V and 5V
VIN=1.35V and 1.95V
VIN=1.35V and 1.95V
IQ
VO
VO
VO
VO
VO
VO
VO
!
!!
!Application example
5
4
6
3
7
2
8
1
Fig.2
BA5962FVM
SIGNALBIAS
SERVO PREAMP
STAND-BY
LOAD
M
!
!!
!Operation notes
1. A thermal-shutdown circuit (over-temperature protection circuit) is built in to prevent the IC from thermal breakdown.
Use the IC under the thermal loss allowed to the package. In case the IC is left running over the allowable loss, the
junction temperature rises, and the thermal-shutdown circuit works at the junction temperature of 160°C (typ.)
(the outputs of the driver is turned off). When the junction temperature drops to 135°C (typ.), the IC start operating
again.
2. When stand-by control terminal (Pin 1) drops below 0.5V, stand-by mode is established. Make sure that under normal
operating conditions, this pin at 2.0V or above.
3. If VCC (Pin 8) drops below 2.5V (typ.), the driver is turned off. When the voltage exceeds 2.7V (typ.) the driver
returns to its previous state.
BA5962FVM
Optical disc ICs
5/5
4. If the bias pin (Pin 2) drops below 0.7V, the output is muted. Make sure that under normal operating conditions, this
pin is at 1.0V or above.
5. The output is muted in the event of a thermal shut down, mute-on, or a bias and VCC voltage drop. Only the driver
is muted. When muted, the internal bias voltage of the output pin becomes roughly (VCC-Vf) / 2). (Vf=0.7V)
6. Please connect a bypass capacitor (0.1µF) across the supply voltage lines close to the IC pins.
7. When a capacitance load is connected to the OP amplifier output, the amplifier phase margin decreases, which causes
the peak or oscillation. When connecting such load, insert a resistance in series between the output and the
capacitance load and take a full consideration for frequency characteristics to prevent problem during practical use.
8. Do not short-circuit between any output pin and supply pin (supply fault) or ground (ground fault), or between any
output pins (load short-circuit). When mounting the IC on the circuit board, be extremely cautions about the orientation
of the IC. If the orientation is mistaken, the IC may break down, and produce smoke in some cases.
!
!!
!Electrical characteristics curve
0.2
0.4
0
0.6
0 25 50 75 100
On less than 3%
(percentage occupied by copper foil),
70mm×70mm, t=1.6mm
glass epoxy mounting.
125 150 175
POWER DISSIPATION : Pd (W)
AMBIENT TEMPERATURE : Ta (°C)
Fig.3 Power dissipation
!
!!
!External dimensions (Units : mm)
MSOP8
41
58
2.9±0.1
0.475
0.65
4.0±0.2
0.6±0.2
0.29±0.15
2.8
±
0.1
0.75±0.05
0.08±0.05
0.9Max.
0.08 S
0.08
M
0.145
+0.05
−0.03
0.22
+0.05
−0.04
