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TDA7385
4 x 30W QUAD BRIDGE CAR RADIO AMPLIFIER
gerTpi'
TDA7385
4 X 30W QUAD BRIDGE CAR RADIO AMPLIFIER
HIGH OUTPUT POWER CAPABILITY:
4 X 35W/4Q MAX.
4 x 30W/4Q EIAJ
4 x 22W/4Q @ 14.4V, 1KHz, 10%
4 x18.5W/4Q @ 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 Vs SHORT
- THERMAL SHUTDOWN
LOW EXTERNAL COMPONENT COUNT:
- INTERNALLY FIXED GAIN (26dB)
- NO EXTERNAL COMPENSATION
- NO BOOTSTRAP CAPACITORS
PROTECTIONS:
OUTPUT SHORT CIRCUIT TO GND, TO Vs,
BLOCK AND APPLICATION DIAGRAM
FLEXIWATT26
ORDERING NUMBER: TDA7385
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 TDA7385 is a new technology class AB
Audio Power Amplifier in Flexiwatt 25 package
f ST-BY
f MUTE
IN1 o-l
0.1r1F
IN2 o-l
INa o-l
0.1IsF
IN4 o-l
DIAGN. OUT
PW-GND
PW-GND
PW-GND
PW-GND
D93AU002C
March 2001
TDA7385
DESCRIPTION (continued)
Thanks to the fully complementary PNP/NPN out- The on-board clipping detector simplifies gain
put configuration the TDA7385 allows a rail to rail compression operations. The fault diagnostics
output voltage swing with no need of bootstrap makes it possible to detect mistakes during Car-
capacitors. The extremely reduced components Radio assembly and wiring in the car.
count allows very compact sets.
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
Vcc Operating Supply Voltage 18 V
Vcc (DC) DC Supply Voltage 28 V
Vcc (pk) Peak Supply Voltage (t = 50ms) 50 V
Io Output Peak Current:
Repetitive (Duty Cycle 10% at f = 10Hz) 4.5 A
Non Repetitive (t = 100ws) 5.5 A
Ptot Power dissipation, (Tease = 70°C) 80 W
T, Junction Temperature 150 °C
Tstg Storage Temperature - 55 to 150 °C
designed for high end car radio applications.
PIN CONNECTION (Top view)
TAB D: -
P-GND E:
om. n:
sT-av n:
OUT2+ J
oun- H:
SVR l]:
s-ewo n:
ma 1]:
AC-GND l]:
P-GN03 l]:
0UT3— E:
Vcc [1:
OUT4+ m—
MUTE I]:
0UT4< l]:
P-ewm n:
DIAGNOSTICS D: 8
DMAU117B
THERMAL DATA
Symbol Parameter Value Unit
Rm j-case Thermal Resistance Junction to Case Max. 1 °C/W
