TDA7381_08 Datasheet, PDF (1/13 Pages) STMicroelectronics – 4 x 25W quad bridge car radio amplifier

TDA7381
4 x 25W quad bridge car radio amplifier
Features
■ High output power capability:
– 4 x 30 W/4 Ω max.
– 4 x 25 W/4 Ω EIAJ
– 4 x 18 W/4 Ω @ 14.4 V, 1 kHz, 10 %
– 4 x 15 W/4 Ω @ 13.2 V, 1 kHz, 10 %
■ Clipping detector
■ Low distortion
■ Low output noise
■ St-by function
■ Mute function
■ Automute at min. supply voltage detection
■ Diagnostics facility for:
– Clipping
– Out to GND short
– Out to V_S short
– Thermal shutdown
■ Low external component count:
– Internally fixed gain (26 dB)
– No external compensation
– No bootstrap capacitors
Protections:
■ Output short circuit to GND, to V_S, across the
load
■ Very inductive loads
■ Overrating chip temperature with soft thermal
limiter
Flexiwatt25
■ Load dump voltage
■ Fortuitous open GND
■ Reversed battery
■ ESD protection
Description
The TDA7381 is a class AB audio power amplifier
in Flexiwatt25 package designed for car radio
applications. Thanks to the fully complementary
PNP/NPN output configuration the TDA7381
allows a rail to rail output voltage swing with no
need of bootstrap capacitors..
The extremely reduced components count allows
very compact sets. The on-board clipping
detector simplifies gain compression operations.
The fault diagnostics makes it possible to detect
mistakes during Car- Radio assembly and wiring
in the car
Table 1.
Device summary
Order code
TDA7381
Package
Flexiwatt25
Packing
Tube
June 2008
Rev 6
1/13
www.st.com
13