Diodes PAM8902A User Manual
Pam8902a, Description, Features
PAM8902A
Document number: DSxxxxx Rev. 1 - 3
1 of 12
February 2013
© Diodes Incorporated
PAM8902A
A Product Line of
Diodes Incorporated
30 V
PP
MONO CLASS-D AUDIO AMPLIFIER FOR
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
30V
PP
(0.6Vrms) from a 3.6V power supply. The PAM8902A's boost
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
•
Supply Voltage Range from 2.7V to 5.5V package.
• 30V
PP
Output Load Voltage from a 2.7V Supply
•
Integrated Boost Converter Generates 17.5V Supply
• Programmable
Soft-Start
•
Unique Anti-Saturation Function
•
Small Boost Converter Inductor
•
Selectable Gain of 18dB, 22dB, and 26dB
(Refer to “Application Notes”)
•
Selectable Boost output voltage of 8V, 12V, and 17.5V
•
Low Shutdown Current: <1µA
•
Build in Thermal, OCP, UVLO, OVP
•
Available in Space Saving Packages:
16-ball 1.95mm x 1.95mm 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