This is information on a product in full production.

September 2013

DocID1509 Rev 5

1/13

TDA7391

35 W bridge car radio amplifier

Datasheet

- production data

Features

 High power capability:

– 40 W/4

 max

– 35 W/4

 EIAJ

– 45 W/3.2

 max

– 40 W/3.2

 EIAJ

– 32 W/3.2

 @ VS = 14.4 V, f = 1 kHz,

d=10 %

– 26 W/4

@ VS = 14.4 V, f = 1 kHz,

d=10 %

 DIfferential inputs (either single ended or

differential input signal are accepted)

 Minimum external component count:

– No bootstrap capacitors

– No Boucherot cells

– Internally fixed gain (30 dB)

– No SVR Capacitor

 Standby function (CMOS compatible)

 Programmable turn-on/off delay

 No audible pop during mute and standby

operations

 Protections:

– Short circuit (to GND, to VS, across the

load)

– Very inductive loads

– Chip over temperature

– Load dump

– Open GND

– ESD

Description

The TDA7391 is a bridge class AB audio power

amplifier specially intended for car radio high

power applications.

The high power capability together with the

possibility to operate either in differential input

mode or single ended input mode makes it

suitable for boosters and high end car radio

equipments. The exclusive fully complementary

output stage and the internal fixed gain

configuration drop the external component count.

The on board clipping detector allows easy

implementation of gain compression systems.

Multiwatt11

Table 1.

Device summary

Order code

Package

Packing

TDA7391

Multiwatt11 (vertical)

Tube

www.st.com