TDA7381 Series

4 x 25 W quad bridge car radio amplifier

Catalog

4 x 25 W quad bridge car radio amplifier

Part	Package / Case	Max Output Power x Channels @ Load [custom]	Max Output Power x Channels @ Load	Features	Supplier Device Package	Voltage - Supply [Min]	Voltage - Supply [Max]	Output Type	Type	Mounting Type
STMicroelectronics TDA7381
STMicroelectronics TDA7381
STMicroelectronics TDA7381	25-Flexiwatt, Formed Leads	4	30 W	Mute, Short-Circuit and Thermal Protection, Standby	25-Flexiwatt (Vertical)	8 V	18 V	4-Channel (Quad)	Class AB	Through Hole

Catalog

4 x 25 W quad bridge car radio amplifier

Key Features

• High output power capability:

- 4 x 30 W/4 Ω max.

- 4 x 25 W/4 Ω EIAJ

- 4 x 18 W/4 Ω @ 14.4 V, 1 kHz, 10 %

- 4 x 15 W/4 Ω @ 13.2 V, 1 kHz, 10 %

• Diagnostics facility for:

- Clipping

- Out to GND short

- Out to VSshort

- 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 protection

Description

The TDA7381 is a class AB audio power amplifier in Flexiwatt25 package designed for car radio applications. Thanks to the fully complementary PNP/NPN output configuration the TDA7381 allows a rail to rail output voltage swing with no need of bootstrap capacitors.. The extremely reduced 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.