®
TDA7381
4 x 25W QUAD BRIDGE CAR RADIO AMPLIFIER
PRELIMINARY DATA
HIGH OUTPUT POWER CAPABILITY:
4 x 30W/4Ω MAX.
4 x 25W/4
Ω
EIAJ
4 x 18W/4
Ω
@ 14.4V, 1KHz, 10%
4 x 15W/4Ω @ 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
– OUT TO V
S
SHORT
– THERMAL SHUTDOWN
LOW EXTERNAL COMPONENT COUNT:
– INTERNALLY FIXED GAIN (26dB)
– NO EXTERNAL COMPENSATION
– NO BOOTSTRAP CAPACITORS
Protections:
OUTPUT SHORT CIRCUIT TO GND, TO V
S
,
BLOCK AND APPLICATION DIAGRAM
Vcc1
Flexiwatt25
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.
Vcc2
2.200µF
100nF
ST-BY
DIAGN. OUT
MUTE
OUT1+
IN1
0.1µF
OUT1-
PW-GND
OUT2+
IN2
0.1µF
OUT2-
PW-GND
OUT3+
IN3
0.1µF
OUT3-
PW-GND
OUT4+
IN4
0.1µF
AC-GND
0.1µF
SVR
47µF
TAB
S-GND
OUT4-
PW-GND
D93AU002C
October 1999
This is preliminary information on a new product now in development. Details are subject to change without notice.
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STMICROELECTRONICS [ STMICROELECTRONICS ]
