Diodes PAM8902 - Manual

PAM8902
Document number: DSxxxxx Rev. 1 - 4
1 of 13
www.diodes.com
November 2012
© Diodes Incorporated
PAM8902
A Product Line of
Diodes Incorporated
30-V
PP
MONO CLASS-D AUDIO AMPLIFIER FOR PIEZO/CERAMIC SPEAKERS
Description
The PAM8902 is a mono, Class-D audio amplifier with integrated
boost converter designed for piezo and ceramic speakers.The
PAM8902 is capable of driving a ceramic/piezo speaker with
30V
PP
(10.6Vrms) from a 3.6V power supply.The PAM8902's Boost
converter operates at a fixed frequency of 1.5MHz, and provides a
17.5V supply with a minimum number of external components.
PAM8902 features an integrated audio low pass filter that rejects high
frequency noise thus improving audio fidelity. And three gain modes
of 18dB, 22dB and 26dB for ease of use. PAM8902 also provides
thermal, short, under- and over-voltage protection.
The PAM8902 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
PP
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 18dB, 22dB, and 26dB
 Selectable Boost Output Voltage of 8V, 12V and 17.5V
 Low Shutdown Current: < 1µA
 Built-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