Instruction Manual

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PAM8902H

Document number: DSxxxxx Rev. 1 - 0

1 of 12

www.diodes.com

December 2012

PAM8902H

Product Line o

Diodes Incorporated

30 V

MONO CLASS-D AUDIO AMPLIFIER FOR PIEZO/CERAMIC SPEAKERS

Description

The PAM8902H is a mono, Class-D audio amplifier with integrated

boost convertor designed for piezo and ceramic speakers.The

PAM8902H is capable of driving a ceramic/ piezo speaker with

30Vpp(10.6Vrms) from a 3.6V power supply.The PAM8902H's Boost

converter operates at a fixed frequency of 1.5MHz , and provides a

17.5V supply with a minimum number of external components.

PAM8902H features an integrated audio low pass filter that rejects

high frequency noise thus improving audio fidelity. And three gain

modes of 21dB, 26dB and 32.5dB easy for using.PAM8902H also

provides thermal ,short, under and over voltage protection.

The PAM8902H is available in a 16-ball 1.95mm x 1.95mm CSP

package and 16-pin QFN4x4 package.

Features

• Supply Voltage Range From 2.5V to 5.5V

• 30 V

Output Load Voltage From a 2.5V Supply

• Integrated Boost Converter Generates 17.5V Supply

• Programmable Soft-Start

• Small Boost Converter Inductor

• Selectable Gain of 21dB, 26dB, and 32.5dB

• Selectable Boost Output Voltage of 8V, 12V, and 17.5V

• Low Shutdown Current: <1µA

• Build in Thermal , OCP ,OVP,Short Protection

• Available in Space Saving Packages:

 16-ball 1.95mmx1.95mm CSP Package

 16-pin QFN4x4 Package

Applications

 Wireless or Cellular Handsets

 Portable DVD Player

 Personal Digital Assistants (PDAs )

 Electronic Dictionaries

 Digital Still Cameras

Pin Assignments

Summary of content (12 pages)

PAGE 1
A Product Line of Diodes Incorporated PAM8902H 30 VPP MONO CLASS-D AUDIO AMPLIFIER FOR PIEZO/CERAMIC SPEAKERS Description Pin Assignments The PAM8902H is a mono, Class-D audio amplifier with integrated boost convertor designed for piezo and ceramic speakers.The PAM8902H is capable of driving a ceramic/ piezo speaker with 30Vpp(10.6Vrms) from a 3.6V power supply.The PAM8902H's Boost converter operates at a fixed frequency of 1.5MHz , and provides a 17.
PAGE 2
A Product Line of Diodes Incorporated PAM8902H Typical Applications Circuit Pin Descriptions Pin Name PVCC VOUT SW PGND1 OUT+ VSET COMP AVDD OUTGSET VCM AGND PGND2 ENA INN INP Bump (CSP) A1 A2 A3 A4 B1 B2 B3 B4 C1 C2 C3 C4 D1 D2 D3 D4 PAM8902H Document number: DSxxxxx Rev.
PAGE 3
A Product Line of Diodes Incorporated PAM8902H Functional Block Diagram Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.) These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground. Parameter Supply Voltage Input Voltage Storage Temperature Maximum Junction Temperature Soldering Temperature Rating 6.0 -0.3 to VDD +0.
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A Product Line of Diodes Incorporated PAM8902H Thermal Information Parameter Symbol Thermal Resistance (Junction to Ambient) θJA Thermal Resistance (Junction to Case) θJC Package CSP QFN4x4-16 CSP QFN4x4-16 Maximum 90 52 72 30 Unit °C/W °C/W Electrical Characteristics (@TA = +25°C, VDD = 3.6V, CL = 1µF, VSET Float, unless otherwise specified.) Symbol VDD IQ Parameter Conditions Input Voltage Quiescent Current Min Typ 2.5 Max Unit 5.5 V mA EN > 1.2V, VSET = High EN > 1.
PAGE 5
A Product Line of Diodes Incorporated PAM8902H Typical Operating Characteristics (@TA = +25°C, VDD = 4.2V, Gain = 26dB, CIN = 1µF, CLOAD = 1µF, unless otherwise specified.) PAM8902H Document number: DSxxxxx Rev. 1 - 0 5 of 12 www.diodes.
PAGE 6
A Product Line of Diodes Incorporated PAM8902H Typical Operating Characteristics (cont.) (@TA = +25°C, VDD = 5V, Gain = 18dB, unless otherwise specified.) PAM8902H Document number: DSxxxxx Rev. 1 - 0 6 of 12 www.diodes.
PAGE 7
A Product Line of Diodes Incorporated PAM8902H Application Information Select Boost Convertor Output Voltage Customer can use VSET pin to set boost converor output voltage between 8V, 12V and 17.5V. VSET pin configuration table as below: VSET Pin Configuration Min Max PVCC Voltage Audio Amplifier Maximum Output Voltage Connect to AVDD AVDD – 0.5V AVDD 17.5V 11VRMS (VPP = 31.1V) Floating 1V AVDD – 1V 12V 5VRMS (VPP = 22.6V) Connect to GND GND 0.5V 8V 5VRMS (VPP = 14.
PAGE 8
A Product Line of Diodes Incorporated PAM8902H Application Information (cont.) Decoupling Capacitor The PAM8902H is a high-performance CMOS audio amplifier that requires adequate power supply decoupling to ensure the output total harmonic distortion (THD) as low as possible. The optimum decoupling is achieved by using two different types of capacitors that target on different types of noise on the power supply leads.
PAGE 9
A Product Line of Diodes Incorporated PAM8902H Ordering Information Part Number PAM8902HZER PAM8902HKER Part Marking BT YW P8902H XXXYW Package Type Standard Package CSP-16L 3000 Units/Tape&Reel QFN4x4-16L 3000 Units/Tape&Reel Marking Information PAM8902H Document number: DSxxxxx Rev. 1 - 0 9 of 12 www.diodes.
PAGE 10
A Product Line of Diodes Incorporated PAM8902H Package Outline Dimensions (All dimensions in mm.) CSP-16 PAM8902H Document number: DSxxxxx Rev. 1 - 0 10 of 12 www.diodes.
PAGE 11
A Product Line of Diodes Incorporated PAM8902H Package Outline Dimensions (All dimensions in mm.) QFN4x4-16 PAM8902H Document number: DSxxxxx Rev. 1 - 0 11 of 12 www.diodes.
PAGE 12
A Product Line of Diodes Incorporated PAM8902H 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).