PAM8902A (Not Recommended for new design)

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 30VPP(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.

Feature(s)

• 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

Application(s)

• Wireless or Cellular Handsets
• Portable DVD Player
• Personal Digital Assistants (PDAs)
• Electronic Dictionaries
• Digital Still Cameras