IR4311M and IR4312M PowIRaudio™ Devices This expansion of the PowIRaudio™ family of integrated power modules includes the introduction of the IR4311M and IR4312M. The 40V IR4311M and IR4312M offer a compact, heatskink-free solution for low power Class D audio applications including tabletop audio systems, active speakers and musical instruments with integrated amplifiers. HOME PAGE DATASHEETS REFERENCE DESIGNS Advantages The combination of an advanced audio controller IC with MOSFETs fully optimized for audio performance results in improved efficiency, THD, and EMI, allowing the IR43xxM family to operate without a mechanical heatsink over a wide power supply range on either a single or split power supply. High voltage ratings and noise immunity ensure reliable operation over various environmental conditions. The new 40V modules simplify system design by eliminating the need for a heatsink. Two reference designs, the IRAUDAMP15 and IRAUDAMP18, featuring the IR4311M and IR4312M are available. PRESS RELEASE Features No mechanical heatsink required High peak music power output Split or single power supply Differential or single-ended input Over-current, over-temperature and under voltage protections with self-reset feature Start/stop click noise reduction Clip and Fault reporting outputs High noise immunity RoHS compliant HI-RES GRAPHIC January 2013