PAM8904QJER - DIODES INC - Product.Network

PAM8904Q

Document number: DS38977 Rev. 2 - 2

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November 2016

PAM8904Q

AUTOMOTIVE 18VPP OUTPUT PEIZO SOUNDER DRIVER

Description

The PAM8904Q is a piezo sounder driver designed for driving a

ceramic/piezo sounder or speaker with 18VPP from a 3V power

supply. A programmable charge pump boost converter allows the

PAM8904Q VOUT to operate in 1x, 2x and 3x mode.

The boost converter operates at a fixed frequency of 1.0MHz and

provides a 9V output with a minimum number of external

components. PAMs unique drive technology ensures minimal inrush

current, low EMI and high efficiency.

To ensure maximum efficiency and battery life, the PAM8904Q

includes an auto standby feature which puts the device in sleep mode

while there is no valid input signal. A forced shutdown is also

available to enable the IC only when required.

To help protect the IC and system, the PAM8904Q includes

overtemperature shutdown, overcurrent and short circuit protection.

The PAM8904Q is available in a 16 pin U-QFN3030-16 (Type B)

package.

The PAM8904Q is qualified to AEC-Q100 Grade 2 and is Automotive

Compliant supporting PPAPs.

Features

 Supply Voltage Range from 2.3V to 5V

 18VPP Output from a 3V Supply

 Integrated Boost Converter Generates 9V Supply

 Wide Input Signal Capability 20Hz to 300kHz

 Low Current Consumption

 Automatic Standby and Wake-up Control

 Overtemperature Shutdown and Short-Circuit Protection

 Available in Space Saving Packages 16 pin U-QFN3030-16

(Type B) Package with Green Molding

 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

 Halogen and Antimony Free. “Green” Device (Note 3)

 Qualified to AEC-Q100 Standards for High Reliability

 AEC-Q100 Grade 2

 PPAP Capable (Note 4)

Pin Assignments

(Top View)

U-QFN3030-16 (Type B)

Applications

 Automotive Alarms

 Dash Board Audio

 GPS

 Electric Vehicle Approach Warning

 Automotive Security Device

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl)

and <1000ppm antimony compounds.

4. Automotive products are AEC-Q100 qualified and are PPAP capable. Refer to http://www.diodes.com/product_compliance_definitions.html.

NC

VIN

CP2

CP1

VOUT

NC

CN2

VO1

VO2

NC

GND

CN1

DIN

CPM1

NC

CPM2

1

GND

PAM8904Q

Document number: DS38977 Rev. 2 - 2

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November 2016

PAM8904Q

Typical Applications Circuit

Pin Descriptions

Pin Number

Pin Name

I/O/P

Function

1

CPM1

I

Charge pump mode select 1

2

CPM2

I

Charge pump mode select 2

3

DIN

I

Signal Input

4

NC

—

No Connection

5

CN1

I

Capacitor 1 Negative Terminal

6

GND

P

Ground

7

VO2

O

Positive Output

8

NC

—

No Connection

9

VO1

O

Negative Output

10

CN2

I

Capacitor 2 Negative Terminal

11

CP1

I

Capacitor 1 Positive Terminal

12

NC

—

No Connection

13

VOUT

O

Boost Output

14

CP2

I

Capacitor 2 Positive Terminal

15

VIN

P

Power Supply

16

NC

—

No Connect

PAD

GND

P

Recommended to connect to GND or No Connection

PAM8904Q

Document number: DS38977 Rev. 2 - 2

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November 2016

PAM8904Q

Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.)

Symbol

Characteristics

Value

Unit

VIN

Supply Voltage

-0.3 to +5.5

V

VI

CPM1, CPM2

GND -0.3 to VIN +0.3

V

θJA

Thermal Resistance (Junction to Ambient)

35

°C/W

θJC

Thermal Resistance (Junction to Case)

14

°C/W

TJ

Operating Junction Temperature Range

-40 to +150

°C

TSTG

Storage Temperature Range

-65 to +150

°C

ESD Susceptibility

HBM

Human Body Model

8

kV

MM

Machine Model

600

V

CDM

Charged Device Model

1

kV

Caution: Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only;

functional operation of the device at conditions between maximum recommended operating conditions and absolute maximum ratings is not implied.

Device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time.

(Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when handling

and transporting these devices.)

Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.)

Symbol

Characteristics

Min

Max

Unit

VIN

Supply Voltage

2.3

5.0

V

VIH

High-Level Input Voltage

CPM1, CPM2

1.2

VIN +0.3

V

VIL

Low-Level Input Voltage

CPM1, CPM2

-0.3

+0.4

V

TA

Operating Free-Air Temperature

-40

+105

°C

PAM8904Q

Document number: DS38977 Rev. 2 - 2

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PAM8904Q

Electrical Characteristics (@TA = +25°C, unless otherwise specified.)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VOUT

Output Voltage Range

Note 5

2.1

—

12

V

VOUT1

Output Voltage

1x Mode

2.8

—

3

V

VOUT2

2x Mode

5.2

—

6

V

VOUT3

3x Mode

7.2

—

9

V

IDD11

Operating Current 1

1x Mode, CPIEZO = No Load

—

50

—

µA

IDD12

2x Mode, CPIEZO = No Load

—

720

—

µA

IDD13

3x Mode, CPIEZO = No Load

—

1,700

—

µA

IDD21

Operating Current 2

1x Mode, Single-ended application

—

0.3

—

mA

IDD22

2x Mode, Single-ended application

—

1.4

—

mA

IDD23

3x Mode, Single-ended application

—

3.9

—

mA

IDD31

Operating Current 3

1x Mode, Differential application

—

0.9

—

mA

IDD32

2x Mode, Differential application

—

3.8

—

mA

IDD33

3x Mode, Differential application

—

8.5

—

mA

ISD

Shutdown Current

DIN = 0V

—

1

µA

fIN

Input Frequency

Rectangular pulse on DIN

0.02

—

300

kHz

fOSC

Oscillating Frequency

—

1

—

MHz

tON1

VOUT Start Delay Time

1x Mode, From DIN signal High to 90%

VOUT steady state

—

270

—

µs

tON2

2x Mode, From DIN signal High to 90%

VOUT steady state

—

320

—

µs

tON3

3x Mode, From DIN signal High to 90%

VOUT steady state

—

350

—

µs

tOFF

Shutdown Delay Time

DIN = H- >L

—

42

—

ms

ISC

Output Short-Circuit Current

—

40

—

mA

OTP

Thermal Shutdown

Junction temperature

—

+150

—

°C

OTPHYS

Thermal Shutdown Hysteresis

—

+37

—

°C

VIH

Control Terminal Voltage H

CPM1, CPM2, DIN pins

0.8 x

VIN

—

VIN

V

VIL

Control Terminal Voltage L

CPM1, CPM2, DIN pins

0

—

0.2 x

VIN

V

IIH1

Control Terminal Current 1

DIN = 3V

—

1

µA

IIH2

Control Terminal Current 2

VCPM1, VCPM2 = 3V, DIN = 3V

—

1

µA

IIH3

Control Terminal Current 3

VCPM1, VCPM2 = 3V, DIN = 0V

—

1

µA

CL

Capacitive Load

—

15

50

nF

Note: 5. It is possible to drive VOUT, VO1 and VO2 to 3x VDD. A supply voltage of 4V of more should not be used in 3x mode as this will exceed the maximum

output voltage rating.

PAM8904Q

Document number: DS38977 Rev. 2 - 2

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November 2016

PAM8904Q

Performance Characteristics (@TA = +25°C, VIN = 3.0V, CPiezo = 15nF, fDIN = 4kHz, unless otherwise specified.)

3x mode

2x mode

1x mode

3x mode

2x mode

1x mode

3x mode

2x mode

1x mode

10nF

22nF

33nF

40nF

50nF

10nF

33nF

40nF

50nF

PAM8904Q

Document number: DS38977 Rev. 2 - 2

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PAM8904Q

Performance Characteristics (Cont. @TA = +25°C, VIN = 3.0V, CPiezo = 15nF, fDIN = 4kHz, unless otherwise specified.)

10nF

22nF

33nF

40nF

50nF

22nF

10nF

22nF

33nF

40nF

50nF

PAM8904Q

Document number: DS38977 Rev. 2 - 2

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PAM8904Q

Application Information

Charge Pump Mode Setting

The Charge Pump Mode (CPM) pins CPM1 and CPM2 are used to set the charge pump into mode 1x VDD, 2x VDD, 3x VDD or they can be used to

put the PAM8904Q in to a forced low current shutdown mode.

DIN

CPM1

CPM2

MODE

0

—

Shutdown Mode

1

0

Shutdown Mode

1

0

1

1x Mode

1

0

2x Mode

1

3x Mode

Care must be taken when using the 3x mode with a VDD supply of 4V or more as this will force the VOUT to exceed its maximum specification. The

table shows the safe operating range of the PAM8904Q.

VDD Range

Mode

2.3V to 3.9V

1x, 2x and 3x

4.0V to 5.0V

1x and 2x only

Timing Chart and Device Operation

When one or both of the CPM pins are pulled high, the device enters normal operation mode, refer to the above table for the mode selection.

Once the PAM8904Q senses a valid signal on the DIN pin, the charge pump will start and provide the desired voltage on the VOUT pin and the

output drive VO1 and VO2 start to function after time tON which is typically between 270µs and 350µs depending on the mode chosen. Once the

input signal on DIN is removed, the PAM8904Q senses this and waits typically 42ms to ensure the signal has been removed. If there is no further

valid signal within the time period tOFF, the PAM8904Q enters into a low current standby mode.

tON

tOFF

t0

PAM8904Q

Document number: DS38977 Rev. 2 - 2

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PAM8904Q

Application Information (Cont.)

Output Configuration

The PAM8904Q is able to be configured either in a differential or a single ended configuration.

Differential Output Typical Application Circuit

C1 = 0.1uF C2 = 0.1uF

CIN = 0.1uF

VIN

CPM1

CPM2

DIN

GND

VOUT

VO1

VO2

Piezo Sounder/

Speaker

COUT = 0.1uF

Charge Pump

Mode:1x, 2x, 3x or Shutdown

Controller Oscillator

Detector Protection

Short Circuit/

OTP

Level Shift

Single Ended Output Typical Application Circuit

C1 = 0.1uF C2 = 0.1uF

CIN = 0.1uF

VIN

CPM1

CPM2

DIN

GND

VOUT

VO1

VO2

Piezo Sounder/

Speaker

COUT = 0.1uF

Charge Pump

Mode:1x, 2x, 3x or Shutdown

Controller Oscillator

Detector Protection

Short Circuit/

OTP

Level Shift

When using the PAM8904Q with a single ended output, the VO2 pin should be left open circuit.

PAM8904Q

Document number: DS38977 Rev. 2 - 2

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PAM8904Q

Application Information (Cont.)

Short-Circuit Protection

The PAM8904Q has short circuit protection circuitry on the outputs to prevent damage. Once a short circuit is detected on the outputs the chip will

limit the total current to protect the output device. This is not a latched fault; once the short is removed the normal operation is restored.

Thermal Protection

If the junction temperature of the PAM904Q exceeds +150°C the device will enter overtemperature shutdown. The outputs and the charge pump

will be switched off. Once the junction temperature cools down to its normal operating condition, the IC will re-start automatically.

Ordering Information

PAM8904Q X X X

J: U-QFN3030-16 (Type B) E: 16 Pin R: Tape & Reel

Part Number

Package

Code

Package Type

(Notes 6 & 7)

7” Tape and Reel

Qualification

(Note 8)

Quantity

Part Number Suffix

PAM8904QJER

J

U-QFN3030-16 (Type B)

3,000/Tape & Reel

R

Automotive Compliant

Notes: 6. Pad layout shown at http://www.diodes.com/package-outlines.html.

7. For Tape and reel information see http://www.diodes.com/_files/datasheets/ap02007.pdf.

8. PAM8904Q has been qualified to AEC-Q100 grade 2 and is classified as “Automotive Compliant” supporting PPAP documentation. Automotive, AEC-

Q100 and standard products are electrically and thermally the same, except where specified.

For more information, please refer to http://www.diodes.com/product_compliance_definitions.html.

See PAM8904 datasheet for commercial qualified versions.

Marking Information

U-QFN3030-16 (Type B)

(Top View)

Package Type

Pin Configuration

Shipping Package

P8904Q

XXXYW

P8904Q: Product Code

XXX: Internal Code

Y: Year 0-9

W: Week: A~Z: 1~26 weeks;

a~z: 27~52 weeks;

z represents 52 and 53 weeks

PAM8904Q

Document number: DS38977 Rev. 2 - 2

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PAM8904Q

Package Outline Dimensions

Please see http://www.diodes.com/package-outlines.html for the latest version.

U-QFN3030-16 (Type B)

Suggested Pad Layout

Please see http://www.diodes.com/package-outlines.html for the latest version.

U-QFN3030-16 (Type B)

U-QFN3030-16

(Type B)

Dim

Min

Max

Typ

A

0.55

0.65

0.60

A1

0

0.05

0.02

A3

—

0.15

b

0.18

0.28

0.23

D

2.95

3.05

3.00

D2

1.40

1.60

1.50

E

2.95

3.05

3.00

E2

1.40

1.60

1.50

e

—

0.50

L

0.35

0.45

0.40

Z

—

0.625

All Dimensions in mm

Dimensions

Value

(in mm)

C

0.500

G

0.150

G1

0.150

X

0.350

X1

1.800

Y

0.600

Y1

1.800

Side View

AA3

A1

Bottom View

D

D2

E

e

b (16x)

L (16x)

E2

(Pin #1 ID)

Z (8x)

0.450

R0.200

X (16x)

Y (16x)

C

Y1

X1

G1

G

PAM8904Q

Document number: DS38977 Rev. 2 - 2

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PAM8904Q

IMPORTANT NOTICE

DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,

INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes

without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the

application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or

trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume

all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated

website, harmless against all damages.

Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.

Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and

hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or

indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.

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noted herein may also be covered by one or more United States, international or foreign trademarks.

This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the

final and determinative format released by Diodes Incorporated.

LIFE SUPPORT

Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express

written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:

A. Life support devices or systems are devices or systems which:

1. are intended to implant into the body, or

2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the

labeling can be reasonably expected to result in significant injury to the user.

B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the

failure of the life support device or to affect its safety or effectiveness.

Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and

acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any

use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related

information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its

representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.

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