IR4301,IR4311

3

www.irf.com

© 2012 International Rectifier

December 5, 2012

Description

The IR4301, IR4311 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 IR4301,

IR4311 operates without mechanical heatsink attached in a typical music playback usage. High voltage ratings

and noise immunity in the controller IC ensures reliable operation over various environmental conditions. A small

5x6 mm PQFN package enhances the benefit of smaller size of Class D topology. The IR4301, IR4311 are a

lead-free, ROHS compliant.

Typical Connection Diagram

1. Inverting Amplifier

-B

+B

Speaker

VB

VAA

VSS

IN+

IN-

COMP

CSD

COM

VN

VS

VP

VCC

CSH

GND

VCC

INPUT

2. Differential Amplifier

-B

+B

Speaker

VB

VAA

VSS

IN+

IN-

COMP

CSD

COM

VN

VS

VP

VCC

CSH

GND

VCC

IN-

IN+