MA5332MSXUMA1

Audio Amplifiers Overview

The MA5332MSXUMA1 is a MERUS™ integrated Class D audio amplifier featuring analog inputs and an integrated output stage with 24.4mΩ RDS(ON). It delivers 2 x 200W in stereo mode (4Ω, THD=10%) or 1 x 400W in mono mode (8Ω, THD=10%). The device supports split supplies (±22V to ±40V) and single supplies (+44V to +80V), achieving 95% full-load efficiency into 4Ω. It includes open-drain flag indicators for clipping and faults, multiple configuration options (SE, BTL, PSE), programmable power-up delay, and integrated OCP, OTP, and UVLO protections.

Audio Amplifiers Feature Summary

• Integrates a dual-channel PWM controller, high-voltage gate driver, and four low RDS(ON) MOSFETs within a multi-chip module solution.
• Supports flexible topology configurations including single-ended, bridge-tied load (BTL), and parallel single-ended (PSE) modes.
• Features click-and-pop-free startup and shutdown via a programmable power-up delay timer connected to the CSD pin.
• Provides open-drain fault reporting and clipping detection outputs for system monitoring and protection integration.

Audio Amplifiers Applications

• Multi-channel home theatre systems
• Studio monitors
• Active speakers
• Soundbar subwoofers
• Marine amplifiers

Audio Amplifiers Procurement Notes

Verify the specific ordering suffix XUMA1 corresponds to the required tape and reel packaging format before procurement. Confirm that the application design accommodates the recommended operating conditions for floating supply voltages and thermal management requirements specified in the datasheet. Ensure compatibility with the PG-IQFN-42 package dimensions during PCB layout.

Audio Amplifiers Selection Notes

Select this component when high power density and heatsink-less operation are required in a compact 7mm x 7mm footprint. It serves as a direct upgrade to monolithic alternatives like the IR43x2M, offering equivalent or higher output power with reduced board space. Consider its support for both single and split supply architectures when designing power stages for varying audio system constraints.

Audio Amplifiers Part Context

The MA5332MS belongs to the Infineon MERUS™ family of integrated Class D amplifiers. It is part of the MA53x2 series, which includes variants optimized for different load impedances such as the MA5302MS (2Ω) and MA5342MS (8Ω). This specific model targets 4Ω loads in stereo applications, providing a balanced solution for high-power audio designs requiring small form factors.

Audio Amplifiers Replacement Considerations

Pin-to-pin compatible with the MA53x2 family. Direct replacement for IR43x2M offers improved power density and smaller size.