PAM8904EGPR-T

Overview

The PAM8904EGPR-T is a piezo sounder driver manufactured by Diodes Incorporated, housed in a U-QFN2020-12 (Type UX) 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 from 20Hz to 300kHz. Key electrical parameters include an operating current of 43µA in 1x mode with no load, and a shutdown current of 8nA. It features automatic standby control, thermal shutdown, overcurrent protection, and undervoltage lockout.

Feature Summary

• Integrated charge pump boost converter generating up to 13.5V output for high-volume piezo drivers
• Supports 1x, 2x, and 3x charge pump modes selectable via EN1/EN2 pins
• Low current consumption with automatic standby and wake-up control for battery life extension
• Built-in protections including thermal shutdown, overcurrent, overvoltage, and undervoltage lockout

Applications

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

Procurement Notes

Verify the ordering suffix 'GPR-T' corresponds to the U-QFN2020-12 (Type UX) package configuration as specified in the manufacturer's datasheet. Confirm that the component meets RoHS compliance and halogen-free requirements if mandated by the design specifications. Ensure the procurement channel provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when a compact surface-mount solution is required for piezo sounder applications. The U-QFN2020-12 package offers a small PCB footprint suitable for space-constrained designs. Ensure the target piezo load capacitance does not exceed the device's maximum rating of 47nF to maintain proper operation and efficiency.

Part Context

This part belongs to the PAM8904E family of piezo sounder drivers. Other variants in the series include PAM8904EJER (U-QFN3030-16), PAM8904EJPR (U-QFN3030-12), and PAM8904EGPR (W-QFN2020-12). The EGPR-T variant specifically utilizes the Type UX package style within the 2020mm x 2020mm form factor.

Replacement Considerations

Direct replacements within the same package are limited as other variants use different pinouts or package types. Cross-package substitution requires careful review of pin assignments and thermal resistance differences between U-QFN2020-12 (Type UX) and alternative packages like W-QFN2020-12.