TDA7381

4 x 25W QUAD BRIDGE CAR RADIO AMPLIFIER

PRELIMINARY DATA

HIGH OUTPUT POWER CAPABILITY:

4 x 30W/4

Ω MAX.

4 x 25W/4

Ω EIAJ

4 x 18W/4

Ω @ 14.4V, 1KHz, 10%

4 x 15W/4

Ω @ 13.2V, 1KHz, 10%

CLIPPING DETECTOR

LOW DISTORTION

LOW OUTPUT NOISE

ST-BY FUNCTION

MUTE FUNCTION

AUTOMUTE AT MIN. SUPPLY VOLTAGE DE-

TECTION

DIAGNOSTICS FACILITY FOR:

– CLIPPING

– OUT TO GND SHORT

– THERMAL SHUTDOWN

LOW EXTERNAL COMPONENT COUNT:

– INTERNALLY FIXED GAIN (26dB)

– NO EXTERNAL COMPENSATION

– NO BOOTSTRAP CAPACITORS

Protections:

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 new technology class AB

Audio Power Amplifier in Flexiwatt 25 package

designed for car radio applications.

This is preliminary information on a new product now in development. Details are subject to change without notice.

October 1999

®

IN1

0.1

µF

MUTE

ST-BY

IN2

0.1

µF

OUT1+

OUT1-

OUT2+

OUT2-

PW-GND

IN3

0.1

µF

IN4

0.1

µF

OUT3+

OUT3-

OUT4+

OUT4-

PW-GND

PW-GND

PW-GND

D93AU002C

AC-GND

0.1

µF47µF

SVR

TAB

S-GND

Vcc1

Vcc2

100nF

2.200

µF

DIAGN. OUT

BLOCK AND APPLICATION DIAGRAM

Flexiwatt25

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