TDA7850ASM

Overview

The TDA7850ASM is a Class-AB audio power amplifier utilizing MOSFET technology, designed for high-power car radio applications. It features a fully complementary P-Channel/N-Channel output structure enabling rail-to-rail voltage swing. The device integrates a DC offset detector and operates within a supply voltage range of 8V to 18V. It provides four channels with a maximum output power of 50W per channel into a 4Ω load. The unit is housed in a 25-Flexiwatt package.

Feature Summary

• MOSFET Class-AB architecture with complementary output stage
• Integrated DC offset detection circuitry
• On-board high-side driver capability
• Automute function triggered by minimum supply voltage

Applications

• High-power automotive radio systems
• Car audio amplification
• Vehicle infotainment speaker driving

Procurement Notes

Verify the specific suffix 'ASM' against official STMicroelectronics documentation to confirm pinout and thermal characteristics. Ensure compatibility with Flexiwatt-25 mounting requirements. Confirm AEC-Q100 qualification status for automotive reliability standards before integration.

Selection Notes

Select this component for designs requiring high output power with low distortion in automotive environments. The internal fixed gain reduces external component count. Consider the 25-Flexiwatt package for thermal management needs in enclosed vehicle spaces.

Part Context

This part belongs to the TDA7850 series of quad bridge power amplifiers. It represents an evolution in MOSFET-based audio solutions for the automotive sector, focusing on minimizing saturation losses while maximizing output current capabilities compared to previous bipolar technologies.

Replacement Considerations

TDA7850A is a documented variant within the same family. Verify package compatibility and electrical parameter alignment before substitution.