STPA008-ZSX

Overview

The STPA008-ZSX is a Class-AB audio power amplifier from STMicroelectronics, designed for high-power car radio applications. It features a fully complementary P-Channel/N-Channel MOSFET output structure enabling rail-to-rail voltage swing. The device integrates four channels capable of delivering up to 50 W per channel into a 4 Ω load. It operates within a supply voltage range of 6 V to 18 V and supports loads as low as 2 Ω. The component includes internal protections against short circuits, over-temperature, and load dump, ensuring robust performance in automotive environments.

Feature Summary

• MOSFET technology with complementary P-Channel/N-Channel output structure for high efficiency and minimal saturation losses
• Integrated protection mechanisms including output short circuit, over-temperature soft thermal limiter, and DC offset detection
• High immunity to GSM noise and RF interference, reducing the need for external input filtering components
• Automotive-grade qualification compliant with AEC-Q100 standards for reliability in harsh environments

Applications

• High-power car radio systems
• Start-stop vehicle battery profile operations
• Hybrid engine audio systems
• Automotive speaker driving with low impedance loads

Procurement Notes

Verify the specific suffix 'ZSX' against official STMicroelectronics documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with Flexiwatt-V-25 or similar mounting requirements. Confirm AEC-Q100 qualification status for the specific variant before integration into safety-critical automotive designs.

Selection Notes

Select this component for applications requiring high output power with analog input simplicity. It serves as an alternative to Class-D amplifiers where thermal management complexity must be reduced. Consider its 6 V minimum operation for vehicles with start-stop capabilities. Evaluate the fixed gain configuration against system signal chain requirements.

Part Context

The STPA008 belongs to STMicroelectronics' automotive Class-AB audio amplifier portfolio. This series targets OEMs seeking to balance audio fidelity with thermal efficiency. The family includes variants optimized for different power levels and diagnostic features, supporting the transition to lower voltage automotive electrical architectures.

Replacement Considerations

Publicly confirmed substitute part numbers for the STPA008-ZSX are not available in the provided source material. Consult STMicroelectronics official cross-reference guides for potential alternatives.