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Product Detailed Parameters
- Description：IC PIEZO SOUNDER DRVR 12UQFN
- Package：Tape & Reel (TR),Cut Tape (CT)
- Series：-
- Mfr：Diodes Incorporated
- Type：Piezo Sounder Driver
- Applications：Health, Home, Security
- Mounting Type：Surface Mount
- Package / Case：12-UFQFN Exposed Pad
- Supplier Device Package：U-QFN3030-12 (Type A)
- Grade：-
- Qualification：-
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Overview
The PAM8904JPR is a piezo sounder driver manufactured by Diodes Incorporated, designed to drive ceramic or piezo sounders with an 18Vpp output from a 5.5V power supply. It features an integrated charge pump boost converter operating at a fixed frequency of 1.0MHz, generating up to a 12V supply. The device supports 1x, 2x, and 3x charge pump modes and can drive loads up to 15nF. It operates within a supply voltage range of 1.8V to 5.5V and includes automatic shutdown and wake-up control for extended battery life. The component is housed in a 12-pin U-QFN3030-12 (Type A) package.
Feature Summary
- Integrated Boost Converter: Generates up to 12V supply with a fixed 1.0MHz oscillating frequency.
- Charge Pump Modes: Supports 1x, 2x, and 3x mode selection via EN1 and EN2 pins.
- Low Current Consumption: Features automatic standby and wake-up control to minimize power usage.
- Protection Circuits: Includes thermal shutdown, over-current protection, over-voltage protection, and undervoltage lock-out.
Applications
- Health care systems
- Alarm clocks
- Security devices
- Home appliances
Procurement Notes
Verify the ordering suffix 'JP' corresponds to the U-QFN3030-12 (Type A) package when sourcing PAM8904JPR. Confirm that the Tape & Reel quantity matches the standard shipping package of 3,000 units per 13-inch carrier. Ensure compliance with RoHS 3 and Halogen-free requirements as specified by the manufacturer.
Selection Notes
Select the PAM8904JPR for applications requiring high-efficiency piezo sounder driving with minimal external components. Choose this part if the design necessitates a 12-pin U-QFN3030-12 footprint. Verify that the maximum supply voltage does not exceed 5.5V and that the load capacitance remains within the 15nF limit to ensure proper operation of the integrated charge pump.
Part Context
The PAM8904 series includes variants such as PAM8904JER (U-QFN3030-16 Type B) and PAM8904GPR (U-QFN2020-12 Type UX). The JPR suffix specifically denotes the 12-pin U-QFN3030-12 package configuration. An automotive-compliant version, PAM8904Q, is available under a separate datasheet for specialized applications.
Replacement Considerations
PAM8904JER serves as a pin-compatible alternative if a 16-pin U-QFN3030-16 package is acceptable. PAM8904GPR is suitable for designs allowing a smaller U-QFN2020-12 footprint. No direct cross-model substitutes are confirmed without verifying package dimensions and pin assignments.
FAQ
What is the maximum output voltage capability of the PAM8904JPR?
The PAM8904JPR is capable of driving a ceramic/piezo sounder with an 18Vpp output from a 5.5V power supply.
How is the charge pump mode selected on the PAM8904JPR?
The charge pump mode (1x, 2x, or 3x) is selected using the EN1 and EN2 input pins. The specific logic levels for each mode are defined in the device's truth table.
What protection features are included in the PAM8904JPR?
The device includes thermal shutdown, over-current protection, over-voltage protection, and undervoltage lock-out to ensure reliable operation.
