PAM8902HKER

PAM8902HKER is a mono, class-D audio amplifier with an integrated boost converter 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. The PAM8902H features an integrated audio low-pass filter that rejects high-frequency noise, thus improving audio fidelity. The PAM8902H also provides thermal, short, under and overvoltage protection. Applications include wireless or cellular handsets, portable DVD players, personal digital assistants (PDAs), electronic dictionaries, and digital still cameras.

• Supply voltage range from 2.5V to 5.5V
• Integrated boost converter generates 17.5V supply
• Programmable soft-start, small boost converter inductor
• Quiescent current is 10mA typ at VEN > 1.2V, VSET = floating
• Shutdown current is 0.1µA typ at VEN = 0V
• Power supply reject ratio is 70dB typ at 200mVPP supply ripple at 217Hz
• Total harmonious distortion plus noise is 0.3% typ at VO = 5VRMS
• Output offset voltage is 5mV typical
• Ambient temperature range from -40 to +85°C
• W-QFN4040-16 (standard) package

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