PAM8902A

Document number: DSxxxxx Rev. 1 - 3

1 of 12

www.diodes.com

February 2013

© Diodes Incorporated

PAM8902A

A Product Line of

Diodes Incorporated

PIEZO/CERAMIC SPEAKERS WITH ANTI-SATURATION

Description

The PAM8902A is a mono, Class-D audio amplifier with integrated

boost convertor designed for piezo and ceramic speakers. The

PAM8902A is capable for driving a ceramic/piezo speaker with

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

17.5V supply with a minimum number of external components. The

three gain mode of 18dB, 22dB and 26dB is easy for using. PAM

unique ant i -saturat ion technology which detects output signal clip

due to the over level input signal suppress the output signal clip

automatically. PAM8902A features an integrated audio low pass filter

that rejects high frequency noise, thus improving audio fidelity.

PAM8902A also provides thermal, over current, under and over

voltage protection.

The PAM8902A is available in a 16-ball 1.95mm x 1.95mm CSP

package and 16-pin QFN4x4 package.

Features

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Supply Voltage Range from 2.7V to 5.5V package.

•

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Integrated Boost Converter Generates 17.5V Supply

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Programmable Soft-Start

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Unique Anti-Saturation Function

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Small Boost Converter Inductor

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Selectable Gain of 18dB, 22dB, and 26dB

(Refer to “Application Notes”)

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Selectable Boost output voltage of 8V, 12V, and 17.5V

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Low Shutdown Current: <1µA

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Build in Thermal, OCP, UVLO, OVP

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Available in Space Saving Packages:

16-ball 1.95mm x 1.95mm CSP package

16-pin QFN4x4 package

Applications

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Wireless or Cellular Handsets

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Portable DVD Player

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Personal Digital Assistants (PDAs )

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Electronic Dictionaries

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Digital Still Cameras

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