TDA7391 Datasheet, PDF (1/8 Pages) STMicroelectronics – 35W BRIDGE CAR RADIO AMPLIFIER

®
TDA7391
35W BRIDGE CAR RADIO AMPLIFIER
HIGH POWER CAPABILITY:
40W/4Ω MAX
35W/4Ω EIAJ
45W/3.2Ω MAX
40W/3.2Ω EIAJ
32W/3.2Ω @ VS = 14.4V, f = 1KHz, d = 10%
26W/4Ω @ VS = 14.4V, f = 1KHz, d = 10%
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:
SHORT CIRCUIT (TO GND, TO VS, ACROSS
THE LOAD)
VERY INDUCTIVE LOADS
CHIP OVERTEMPERATURE
LOAD DUMP
OPEN GND
Figure 1: Test And Application Circuit
Multiwatt11
ORDERING NUMBER: TDA7391
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.
IN+
IN-
V_S
SW1
C2 0.22µF
C1 0.22µF
23
C5 100nF
9
OUT+
7
1
OUT-
TDA7391 5
8
ST-BY
11
C3
33µF
CD
10
64
GND
R2
56KΩ
+VS
C4 1000µF
Vref
R1
4.7KΩ
TO µC
D94AU133
October 1998
1/8
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.