STPA002HSD-48X

Overview

The STPA002HSD-48X is a MOSFET Class AB quad bridge audio power amplifier designed for high-power car radios. It delivers up to 52 W per channel into 4 Ω loads and 85 W into 2 Ω loads at 14.4 V with 10% THD. The device operates from a supply voltage range of 6 V to 18 V, ensuring compliance with start-stop vehicle specifications. It features an internally fixed gain of 26 dB, eliminating the need for external compensation or bootstrap capacitors.

Feature Summary

• MOSFET output power stage providing high current capability and low distortion
• Compliant with low voltage operation for start-stop and hybrid vehicles
• Integrated protections including short circuit, over-temperature, and reverse battery
• Built-in DC offset detection and clipping diagnostics

Applications

• High-power car radio systems
• Start-stop vehicle audio applications
• Hybrid vehicle battery transition environments

Procurement Notes

Verify the specific suffix 'HSD-48X' against official STMicroelectronics documentation, as the primary datasheet lists variants such as OD-4WX and CD-48X. Confirm package type (Flexiwatt25 or Flexiwatt27) and environmental compliance grade (ECOPACK) prior to ordering. Ensure design compatibility with the specified 6 V to 18 V operating range.

Selection Notes

Select this component for automotive audio designs requiring robust performance under varying battery conditions. The internal fixed gain simplifies schematic design by removing external feedback components. Consider the Flexiwatt27 package if clipping detection and diagnostic outputs are required for system monitoring.

Part Context

The STPA002 belongs to a family of complementary quad audio power amplifiers utilizing Multipower BCD technology. It is engineered for automotive environments, offering rail-to-rail output swing and high immunity to RF noise injection. The series supports both 2 Ω and 4 Ω load driving capabilities with minimal external component count.

Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.