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The PAM8904E is a piezo sounder driver with integrated charge pump boost converter. The PAM8904E is capable of driving a ceramic/piezo sounder with 27VPP from a 4.5V power supply. The charge pump can operate in either 1x, 2x or 3x mode.

The boost converter operates at a fixed frequency of 100kHz and provides a 3X VIN output with a minimum number of external components. The PAM8904E can drive up to 47nF loading. Diodes Incorporated’s unique drive technology provides a small inrush current, low EMI and high efficiency.

The PAM8904E includes built-in automatic shutdown and wake up that guarantees longer battery life. The PAM8904E features thermal shutdown, over current protection, over voltage protection and under voltage lock-out.

The PAM8904E is available in U-QFN3030-16 (Type B), U-QFN3030-12 (Type A) and W-QFN2020-12 (Type US) packages.


  • Health Care Systems
  • Alarm Clocks
  • Security Devices
  • Home Appliances


  • Supply Voltage Range from 1.5V to 5.5V
  • 18VPP Output from a 3V Supply
  • Integrated Boost Converter Generates up to 13.5V Supply
  • Input Signal 20Hz to 300kHz
  • No Voltage Cross Output at Shutdown Mode
  • Low Current Consumption
  • Automatic Standby and Wake-up Control
  • Available in Space Saving Packages U-QFN3030-16 (Type B), U-QFN3030-12 (Type A) and W-QFN2020-12 (Type US) Packages

Product Specifications

Product Parameters

Qualified to AECQ10x No
Automotive Compliant PPAP No
Minimum VDD 1.5 V
Maximum VDD 5.5 V
IQ 0.22 mA
Power/CH (W) @ THD=10% N/A
Power/CH (W) @ THD=1% N/A
Mono or Stereo Mono
Class-D or AB D
Power Limit No
Anti-Sat No
Headphone Out No
Efficiency N/A %
Volume/ Gain 3- Step
Gain Min N/A dB
Gain Max N/A dB
Special Feature Boost Converter Built-in

Related Content

U-QFN3030-12 (Type A)
U-QFN3030-16 (Type B)
W-QFN2020-12 (Type US)


Technical Documents

Recommended Soldering Techniques


Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
PAM8904EGPR Digi-Key Electronics 2579 3/29/2020 Buy Now United States
PAM8904EGPR Mouser Electronics Inc. 2970 3/29/2020 Buy Now United States
PAM8904EJER Digi-Key Electronics 2750 3/29/2020 Buy Now United States
PAM8904EJPR Digi-Key Electronics 2551 3/29/2020 Buy Now United States
PAM8904EJPR Mouser Electronics Inc. 2573 3/29/2020 Buy Now United States


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