STPA002OD-4WX

Overview

The STPA002OD-4WX is a MOSFET Class-AB audio power amplifier designed for high-power car radio applications. It features four bridge channels delivering up to 85 W into 2 Ohms or 55 W into 2 Ohms at 14.4 V with 10% THD+N. The device operates on a supply voltage range of 6 V to 18 V and supports low-voltage operation compliant with start-stop vehicle specifications. It includes protections against short circuits, overtemperature, reverse battery, and load dump.

Feature Summary

• MOSFET output stage providing high current capability and robust performance in automotive environments
• Compliant with OEM specifications for low voltage operation in start-stop and hybrid vehicles
• Integrated protection mechanisms including thermal limiting, DC offset detection, and fault handling

Applications

• High-power car radio systems
• Start-stop vehicle audio amplification
• Hybrid vehicle battery transition audio support

Procurement Notes

Verify component authenticity through authorized distributors as the part number may have specific ordering suffixes. Confirm RoHS compliance status and AEC-Q100 qualification details prior to integration. Check for active production status versus obsolescence notices from STMicroelectronics to ensure long-term availability for automotive designs.

Selection Notes

Select this amplifier for applications requiring high output power into low impedance loads such as 2 Ohm speakers. Ensure the design accommodates the Flexiwatt25 package thermal requirements. Verify that the system supply voltage remains within the 6 V to 18 V range to maintain optimal performance and protection functionality.

Part Context

This component belongs to the STPA002 series of automotive audio amplifiers. It is specifically engineered for demanding automotive electrical environments, offering superior distortion performance and drive capability compared to standard bipolar alternatives. The series is widely used in modern vehicle infotainment systems.

Replacement Considerations

STPA002OD-QIX is a related variant within the same family. Verify pinout compatibility and specific parameter differences before substitution.