TDA7850H
Overview
The TDA7850H is a high-performance Class AB quad bridge audio power amplifier designed for high-power car radio applications. It features a MOSFET output stage that delivers Hi-Fi class distortion levels and 85W of maximum output power across four channels at 2 Ohms. This component integrates comprehensive protection features including short-circuit, thermal, and DC offset detection, minimizing the need for external protection circuitry.
Why Choose This Part
The TDA7850H eliminates the need for bootstrap capacitors and external compensation, reducing the total bill of materials and PCB footprint. Its MOSFET output stage ensures low noise and high current capability, while the 0.35 A high-side driver and built-in diagnostic features like DC offset detection enhance system reliability in harsh automotive environments.
Applications
Key Specifications
Getting Started
Designers should prioritize heat sink selection for the Flexiwatt25 package to manage thermal dissipation at high power levels. To minimize noise, use high-quality decoupling capacitors on the supply pins and follow a star-grounding layout. The ST-BY and Mute pins can be controlled via a microcontroller GPIO to manage power-on sequencing and prevent audible pops.
