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PAM8904E Piezo Sounder Drivers

Diodes’ PAM8904E has a unique drive technology which ensures small inrush current, low EMI, and high efficiency

Image of PAM8904E Piezo Sounder DriversDiodes’ PAM8904E piezo sounder driver with an integrated charge-pump boost converter can drive a ceramic/piezo sounder with 27 VPP from a 4.5 V power supply. It features a charge pump that boosts in either 1X, 2X, or 3X modes. The charge-pump boost converter operates at a fixed frequency of 100 kHz and provides a 9 V output with a minimal number of external components. The PAM8904E can drive up to 47 nF loading. Its unique drive technology ensures small inrush current, low EMI, and high efficiency. The built-in automatic shutdown and wake-up features guarantee longer battery life. The PAM8904E features thermal shutdown, overcurrent protection, overvoltage protection, and undervoltage lockout. With a small PCB footprint, it is available in a W-QFN2020-12, U-QFN303012, or U-QFN3030-16 package.

Features
  • Up to 27 VPP output with 4.5 V supply
    • Higher sound pressure level (SPL) sound output
  • Wide supply voltage range from 1.5 V to 5.5 V
    • High flexibility to serve broad applications
  • Automatic shutdown and wake-up control
    • Extends operating life
  • Wide input signal range from 20 Hz to 300 kHz
    • Fits various applications from entire audio ranges to ultrasonic frequencies
  • Tiny QFN2020-12 and QFN3030-12/16 packages
    • Small PCB footprint solution
      • QFN2020-12 further optimizes PCB area
Applications
  • Healthcare systems
  • Alarm clocks
  • Internet of Things (IoT)/Bluetooth® trackers
  • Security devices
  • Home appliances
  • Smoke alarms

PAM8904E Piezo Sounder Drivers

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
AUDIO HIGH VOLT U-QFN3030-16PAM8904EJERAUDIO HIGH VOLT U-QFN3030-162952 - ImmediateView Details
AUDIO HIGH VOLT U-QFN3030-12PAM8904EJPRAUDIO HIGH VOLT U-QFN3030-122858 - Immediate
18000 - Factory Stock
View Details
AUDIO HIGH VOLT U-QFN2020-12PAM8904EGPRAUDIO HIGH VOLT U-QFN2020-122619 - ImmediateView Details
Published: 2019-12-13