ST TDA7376B User Manual
®
2 x 35W POWER AMPLIFIER FOR CAR RADIO
HIGH OUTPUT POWER CAPABILITY:
2 x 40W max./4Ω
2 x 35W/4Ω EIAJ
2 x 25W4Ω @ 14.4V, 1KHz, 10%
2 x 37W2Ω @ 14.4V, 1KHz, 10%
2Ω DRIVING
DIFFERENTIAL INPUTS
MINIMUM EXTERNAL COMPONEN T COUNT
INTERNALLY FIXED GAIN (26dB)
MUTE FUNCTION (CMOS COMPAT IBLE)
AUTOMUTE AT MINIMUM SUPPLY VOLT-
AGE DETECTION
STAND-BY FUNCTION
NO AUDIBLE POP DURING MUTE AND ST-
BY OPERATIONS
CLIPPING DETE CTOR WITH PROGRAMMA-
BLE DISTORTION THR ESHOLD
PROTECTIONS:
SHORT CIRCUIT (OUT TO GROUND, OUT
TO SUPPLY VOLTAGE, ACROSS THE
LOAD)
OVERRATING CHIP TEMPERATURE WITH
SOFT THERMAL LIMITER
LOAD DUMP VOLTAGE
FORTUITOUS OPEN GROUND
LOUDSPEAKER DC CURRE NT
ESD
TDA7376B
MULTIWATT15
ORDERING NUMBER:
DESCRIPTION
The TDA7376B is a new technology dual bridge
Audio Amplifier in Multiwatt 15 package designed
for car radio applications. Thanks to the fully complementary PNP/NPN output stage configuration
the TDA7376B delivers a rail-to-rail voltage swing
with no need of boo tstrap capacitors. Differential
input pairs, that will accept either singl e ended or
differential input signals, guarantee high noise immunity making the device suitable for both car radio and car boosters applications.
The audio mute control, t hat attenuates the output signal of the audio amplifiers, suppresses pop
on - off transients and cuts any noises coming
from previous stages. The St-By control, that debiases the amplifiers, reduces the cost of the
power switch. The on-board programmable distortion detector allows compression facility whenever the ampifier is overdriven, so limiting the distortion at any levels inside the presettable range.
TDA7376B
PIN CONNECTION (Continued)
May 2000
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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TDA7376B
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
OP
V
S
V
peak
I
O
P
tot
T
stg, Tj
Operating Supply Voltage 18 V
DC Supply Voltage 28 V
Peak Supply Voltage (t = 50ms) 50 V
Output Peak Current (non rep. t = 100µs)
Output Peak Current (rep. f > 10Hz)
Power Dissipation at T
= 85°C36W
case
8
6
Storage and Junction Temperature –40 to 150
THERMAL DATA
Symbol Parameter Value Unit
Thermal Resistance Junction-case max. 1.8
2/9
R
th j-case
°
C/W
°
A
A
C
Figure 1: Differential Inputs Test and Application Circuit
1µF
TDA7376B
Figure 2: Single Ended Inputs Test and Application Circuit
1µF
3/9
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