NOT RECOMMENDED FOR NEW DESIGN CONTACT US PAM8902H 30 V MONO CLASS-D AUDIO AMPLIFIER FOR PIEZO/CERAMIC SPEAKERS PP Description Pin Assignments The PAM8902H is a mono, Class-D audio amplifier with integrated boost Converter designed for piezo and ceramic speakers. The PAM8902H is capable of driving a ceramic/ piezo speaker with 30V PP (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. And three gain modes of 21dB, 26dB and 32.5dB easy for using. The PAM8902H also provides thermal, short, under and over voltage protection. The PAM8902H 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 Output Load Voltage from a 2.5V Supply PP Integrated Boost Converter Generates 17.5V Supply Programmable Soft-Start Small Boost Converter Inductor Selectable Gain of 21dB, 26dB, and 32.5dB Selectable Boost Output Voltage of 8V, 12V, and 17.5V Low Shutdown Current: <1A Built-In Thermal, OCP, OVP, Short Protection Available in Space Saving Packages: 16-Ball 1.95mmx1.95mm CSP-16L Package 16-Pin QFN4x4-16L Package Applications Wireless or Cellular Handsets Portable DVD Player Personal Digital Assistants (PDAs) Electronic Dictionaries Digital Still Cameras 1 of 12 March 2021 PAM8902H Diodes Incorporated www.diodes.com Document number: DS36453 Rev. 4 - 3 PAM8902H Typical Applications Circuit Pin Descriptions Bump Pin Number Pin Name Function (QFN4x4-16L) (CSP-16L) PVCC A1 16 Audio Amplifier Power Supply VOUT A2 1 Boost Converter Output SW A3 2 Boost Converter Switching Node PGND1 A4 4 Boost Converter Power Ground OUT+ B1 15 Positive Differential Audio Output VSET B2 3 Boost Converter Output Voltage Setting (8V, 12V, 17.5V) COMP B3 5 Boost Converter Compensation AVDD B4 6 Power Supply OUT- C1 14 Negative Differential Audio Output GSET C2 11 Amplifier Gain Setting ( 21dB, 26dB, 32.5dB) VCM C3 7 Common Mode Bypass Cap AGND C4 8 Analog Ground PGND2 D1 13 Class D Power Ground ENA D2 12 Whole Chip Enable INN D3 10 Negative Differential Audio Input INP D4 9 Positive Differential Audio Input 2 of 12 March 2021 PAM8902H Diodes Incorporated www.diodes.com Document number: DS36453 Rev. 4 - 3