PAM8904EJPR

Overview

The PAM8904EJPR is a piezo sounder driver manufactured by Diodes Incorporated, housed in a U-QFN3030-12 (Type A) package. It integrates a charge pump boost converter capable of driving ceramic or piezo sounders with up to 27Vpp from a 4.5V supply. The device operates on a supply voltage range of 1.5V to 5.5V and supports input signals between 20Hz and 300kHz. Key electrical characteristics include an operating current of 43µA in 1x mode at no load and a shutdown current of 0.008µA. It features thermal shutdown, overcurrent protection, and undervoltage lockout.

Feature Summary

• Integrated Boost Converter: Generates up to 13.5V supply for high-voltage output.
• Multi-mode Charge Pump: Operates in 1x, 2x, or 3x modes via EN1/EN2 pins.
• Low Power Consumption: Automatic standby and wake-up control extend battery life.
• Protection Features: Includes thermal shutdown, short-circuit protection, and undervoltage lockout.

Applications

• Health care systems
• Alarm clocks
• Security devices
• Home appliances

Procurement Notes

Verify the specific ordering suffix 'JPR' corresponds to the U-QFN3030-12 (Type A) package with Tape & Reel packing. Confirm that the component meets RoHS and Halogen-free requirements as specified in the datasheet notes. Ensure compatibility with surface mount assembly processes given the exposed pad design.

Selection Notes

Select this component when driving piezo sounders requiring up to 27Vpp from low voltage supplies. The U-QFN3030-12 package offers space-saving benefits compared to larger footprints. Consider the 100kHz oscillating frequency and required external capacitors for the charge pump configuration during circuit design.

Part Context

This part belongs to the PAM8904E series of piezo sounder drivers. Other variants in the series include PAM8904EJER (U-QFN3030-16), PAM8904EGPR (W-QFN2020-12), and PAM8904EGPR-T (U-QFN2020-12). The JPR suffix specifically denotes the 12-pin Type A QFN package.

Replacement Considerations

Direct replacements within the same family include PAM8904EJER, though it uses a 16-pin package. For smaller footprints, PAM8904EGPR or PAM8904EGPR-T are available but require different PCB layouts due to the W-QFN2020-12 or U-QFN2020-12 packages.