IR4302MTRPBF

Overview

The IR4302MTRPBF is a two-channel integrated analog input Class-D audio amplifier in a 7x7 mm PQFN44 package. It delivers 130 W output power into a 4 Ω load at THD+N=10%. Residual noise is typically 250 μVrms, and total harmonic distortion plus noise is 0.02% at 1 kHz with 1 W output into 4 Ω. The device supports split or single power supplies and accepts differential or single-ended inputs.

Feature Summary

• Integrates two-channel PWM controller and digital audio MOSFETs for high performance.
• Operates without mechanical heatsink during typical music playback usage.
• Includes over-current, over-temperature, and under-voltage protections with self-reset.
• Features start/stop click noise reduction and clip/fault reporting outputs.

Applications

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

Procurement Notes

Verify the complete part number against official Infineon documentation to ensure correct ordering suffixes and packaging specifications. Confirm that the specific revision matches your design requirements. Cross-reference datasheet electrical characteristics with your system's operating conditions before finalizing procurement decisions.

Selection Notes

Select this component for applications requiring high power density and minimal thermal management overhead. Ensure the power supply voltage does not exceed the absolute maximum ratings of 80 V. Verify that the PCB layout accommodates the 7x7 mm PQFN44 package dimensions and provides adequate copper area for thermal dissipation.

Part Context

This device belongs to the IR43x2 family of integrated Class-D audio amplifiers from Infineon Technologies. It combines optimized MOSFETs with a dedicated controller IC in a compact form factor. The series is designed to provide high peak music power output while maintaining small physical size and eliminating the need for external heatsinks in standard usage scenarios.

Replacement Considerations

IR4322MTRPBF (60 V rating) and IR4312MTRPBF (40 V rating) are pin-compatible alternatives within the same family offering lower voltage capabilities.

FAQ

Does the IR4302 require an external heatsink?

No, the fully optimized MOSFETs co-packed with the controller allow operation without a mechanical heatsink in typical music playback usage.

What protection features are included?

The device includes over-current, over-temperature, and under-voltage protections, all featuring a self-reset capability.