PAM8904EGPR

Overview

The PAM8904EGPR is a piezo sounder driver manufactured by Diodes Incorporated, housed in a W-QFN2020-12 (Type US) 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 supports 1x, 2x, and 3x charge pump modes and operates on a supply voltage range of 1.5V to 5.5V. Key electrical characteristics include an input signal frequency range of 20Hz to 300kHz, low shutdown current, and built-in protections such as thermal shutdown, overcurrent protection, and undervoltage lockout.

Feature Summary

• Integrated charge pump boost converter generating up to 13.5V supply for high output voltage
• Operates in 1x, 2x, or 3x mode to drive piezo sounders up to 27VPP
• Automatic standby and wake-up control for extended battery life
• Built-in thermal shutdown, overcurrent protection, and short-circuit protection

Applications

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

Procurement Notes

Verify the ordering suffix 'GPR' corresponds to the W-QFN2020-12 (Type US) package configuration. Confirm that the component status is listed as Active rather than NRND. Ensure compliance with RoHS and halogen-free requirements if specified for the target application environment.

Selection Notes

Select this part when a compact W-QFN2020-12 footprint is required for space-constrained designs. Choose based on the need for differential or single-ended output configurations. Consider the 1.5V to 5.5V supply range compatibility with the system power architecture and the maximum load capacitance of 47nF.

Part Context

This component belongs to the PAM8904E family of piezo sounder drivers. The 'GPR' suffix specifically identifies the W-QFN2020-12 (Type US) package variant with tape and reel packing. Other variants in the series include JPR and JER, which utilize different package dimensions.

Replacement Considerations

Direct substitutes within the same package include PAM8904EGPR-T, which uses the U-QFN2020-12 (Type UX) package. Cross-package replacements like PAM8904EJPR require PCB layout modifications due to differences in pin assignments and physical dimensions.