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IR4321 Datasheet Integrated analog input Class D audio amplifier

Manufacturer: International Rectifier (now Infineon)

Download the IR4321 datasheet PDF. This datasheet also includes the IR4301 variant, as both parts are published together in a single manufacturer document.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (IR4301-InternationalRectifier.pdf) that lists specifications for multiple related part numbers.

General Description

The IR43x1 integrates PWM controller and digital audio MOSFETs forming a high performance Class D audio amplifier.

As a result of fully optimized MOSFETs co-packed with a dedicated controller IC, the IR43X1operates without mechanical heatsink attached in a typical music playback usage.

High voltage ratings and noise immunity in the controller IC ensures reliable operation over

Overview

IR43x1.

Key Features

  • Integrated analog input Class D audio amplifier in a small 5 x 6 mm PQFN package.
  • High peak music power output.
  • No mechanical heatsink required.
  • Split or single power supply.
  • Differential or single-ended input.
  • Over-current, over-temperature and under voltage protections with self-reset function.
  • Start and stop click noise reduction.
  • High noise immunity.
  • RoHS compliant Typical.

More Datasheets from International Rectifier (now Infineon)

Part Number Description
IR4322 2-Channel Integrated Analog Input Class D Audio Amplifier
IR4301 Integrated analog input Class D audio amplifier
IR4302 2-Channel Integrated Analog Input Class D Audio Amplifier
IR4311 Integrated analog input Class D audio amplifier
IR4312 2-Channel Integrated Analog Input Class D Audio Amplifier
IR4007K Switched Power-Supply
IR44252LPBF SOT-23 Single Low-Side Driver
IR4426 DUAL LOW SIDE DRIVER
IR4426PBF DUAL LOW SIDE DRIVER
IR4426S DUAL LOW SIDE DRIVER