IR4322MTRPBF

Overview

The IR4322MTRPBF is a two-channel integrated analog input Class D audio amplifier from the IR43x2 family, manufactured by Infineon Technologies. It operates within a positive power supply voltage range of up to 60 V without a heatsink and utilizes a 7 x 7 mm PQFN44 package. The device delivers an output power of 100 W into a 2 Ω load at THD+N=10%. Key electrical characteristics include a typical residual noise of 250 μVrms and a total harmonic distortion plus noise of 0.02% at 1 kHz with 1 W output into a 4 Ω load.

Feature Summary

• Integrates two-channel PWM controller and digital audio MOSFETs for high-performance Class D amplification
• Operates without mechanical heatsink in typical music playback usage
• Supports split or single power supplies with differential or single-ended inputs
• Includes over-current, over-temperature, and under-voltage protections with self-reset capability

Applications

• Home theatre systems
• Docking station audio systems
• PC audio systems
• Musical instruments
• Karaoke amplifiers

Procurement Notes

Verify that the ordering suffix TRPBF corresponds to the tape and reel packaging format containing 3000 units per standard pack. Confirm the base part number matches the specific voltage rating requirements for the IR4322 variant. Ensure compatibility with the specified PQFN44 footprint during procurement planning.

Selection Notes

Select this component when a compact two-channel solution is required without external heatsinking. The IR4322 variant is appropriate for applications demanding 100 W output into 2 Ω loads. Verify that the system design accommodates the 7 x 7 mm PQFN44 package dimensions and thermal dissipation characteristics under maximum operating conditions.

Part Context

This component belongs to the IR43x2 series of integrated Class D audio amplifiers. The series includes variants such as the IR4302 and IR4312, which differ primarily in their maximum voltage ratings and corresponding output power capabilities. All variants share the same small form factor and core integration architecture.

Replacement Considerations

IR4302MTRPBF

FAQ

What is the maximum positive power supply voltage for the IR4322M without a heatsink?

The maximum positive power supply voltage for the IR4322M without a heatsink is 60 V.

Does the IR4322M support both differential and single-ended audio inputs?

Yes, the device supports both differential and single-ended audio inputs.