Description

The TDA7385 is an AB class audio power amplifier, packaged in Flexiwatt 25 and designed for high end car radio applications.

Based on a fully complementary PNP/NPN

configuration, the TDA7385 allows a rail to rail output voltage swing with no need of bootstrap capacitors. The extremely reduced boundary components count allows very compact sets.

The on-board clipping detector simplifies gain compression operations. The fault diagnostics makes it possible to detect mistakes during car radio assembly and wiring in the car.

Features

■ High output power capability:

– 4 x 42 W / 4 Ω max.

– 4 x 23 W / 4 Ω @ 14.4 V, 1 kHz, 10

■ Clipping detector

■ Low distortion

■ Low output noise

■ Standby function

■ Mute function

■ Automute at min. supply voltage detection

■ Diagnostics facility for:

– Clipping

– Out to GND short

– Out to VS short

– Thermal shutdown

■ Low external component count:

– Internally fixed gain (26 dB)

– No external compensation

– No bootstrap capacitors

■ Protections:

– Output short circuit to GND, to VS, across the load

– Very inductive loads

– Overrating chip temperature with soft thermal limiter

– Load dump voltage

– Fortuitous open GND

– Reversed battery

– ESD