MA5332MS
MERUS™ 2-channel analog input class D audio amplifier multichip module
The MERUS™ MA5332MS multichip module offers the same or even higher output power as monolithic alternatives without a heatsink and 50 percent less footprint. This MCM (multi-chip module) solution integrates a dual-channel PWM controller, high-voltage gate driver, and 4 low RDS(ON) MOSFETs. Like its predecessor, IR43x2M, it includes standard class D protection features for reliable operation over various environmental conditions. As a powerful upgrade to IR43x2M and other monolithic solutions, the MA5332MS’ 7x7 mm PG- IQFN-42 package showcases the benefit of a small footprint, high power density, and operation without a heatsink.
Summary of Features
- 2-channel analog input class D audio amplifier in a small 7x7mm package
- Very low RDS(ON) @ 24.4 mΩ typical, enabling operation without a heatsink at 2x100W at 4Ω
- 95% efficiency class D at 2x200W at 4Ω
- Split or single power supply capable
- Differential or single-ended input
- Multiple configuration options: 2xSE, BTL, PSE (parallel single-ended)
- Over-current, over-temperature and under-voltage protections with self-reset feature
- Start/stop click noise reduction
- Clip and fault reporting outputs
Benefits
- Enables heatsink-less solution comparing to same power level monolithic approach
- Enables high power SE (single-ended)
- Designs with reduced bus capacitors and output filters based on a low voltage BTL approach
- Simplifies class D design and eliminates the needs for external protection circuitry
Potential Applications
- Multi-channel home theatre system
- Studio monitor
- Active speaker
- Soundbar subwoofer
- Marine amplifier
- Aftermarket car audio system
- General-purpose audio power amplifier
