TDA7391

35W BRIDGE CAR RADIO AMPLIFIER

HIGH POWER CAPABILITY:

40W/4

Ω MAX

35W/4

Ω EIAJ

45W/3.2

Ω MAX

40W/3.2

Ω EIAJ

32W/3.2

26W/4

DIFFERENTIAL INPUTS (EITHER SINGLE

ENDED OR DIFFERENTIAL INPUT SIGNAL

ARE ACCEPTED)

MINIMUM EXTERNAL COMPONENT COUNT:

- NO BOOTSTRAP CAPACITORS

- NO BOUCHEROT CELLS

- INTERNALLY FIXED GAIN (30dB)

- NO SVR CAPACITOR

ST.-BY FUNCTION (CMOS COMPATIBLE)

PROGRAMMABLE TURN-ON/OFF DELAY

NO AUDIBLE POP DURING MUTE AND ST-

BY OPERATIONS

PROTECTIONS:

THE LOAD)

VERY INDUCTIVE LOADS

CHIP OVERTEMPERATURE

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 possi-

bility 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 imple-

mentation of gain compression systems.

This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

October 1998

®

1

2

11

IN-

C2 0.22

µF

C1 0.22

µF

IN+

8

ST-BY

10

6

OUT+

OUT-

7

5

4

Vref

CD

TDA7391

D94AU133

R1

4.7K

Ω

C4 1000

µF

GND

R2

56K

Ω

C3

33

µF

C5 100nF

39

TO

µC

+VS

SW1

Figure 1: Test And Application Circuit

Multiwatt11

ORDERING NUMBER: TDA7391

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