TDA7381 STMicroelectronics

TDA7381 4 x 25 W quad bridge car radio amplifier Datasheet production data Features High output power capability: 4 x 30 W/4 max. 4 x 25 W/4 EIAJ 4 x 18 W/4 14.4 V, 1 kHz, 10 % 4 x 15 W/4 13.2 V, 1 kHz, 10 % 0 03 Flexiwatt25 Clipping detector Low distortion Low output noise Standby function Load dump voltage Fortuitous open GND Mute function Reversed battery Automute at min. supply voltage detection ESD protection Diagnostics facility for: Clipping Description Out to GND short Out to V short The TDA7381 is a class AB audio power amplifier S in Flexiwatt25 package designed for car radio Thermal shutdown applications. Thanks to the fully complementary Low external component count: PNP/NPN output configuration the TDA7381 Internally fixed gain (26 dB) allows a rail to rail output voltage swing with no No external compensation need of bootstrap capacitors.. No bootstrap capacitors The extremely reduced components count allows Protections: very compact sets. The on-board clipping Output short circuit to GND, to V , across detector simplifies gain compression operations. S the load The fault diagnostics makes it possible to detect mistakes during car-radio assembly and wiring in Very inductive loads the car. Overrating chip temperature with soft thermal limiter Table 1. Device summary Order code Package Packing TDA7381 Flexiwatt25 Tube September 2013 Doc ID 4947 Rev 8 1/15 This is information on a product in full production. www.st.com 1Contents TDA7381 Contents 1 Block / application diagram and pins connection diagram 5 2 Electrical specifications 6 2.1 Absolute maximum ratings . 6 2.2 Thermal data . 6 2.3 Electrical characteristcs . 6 2.4 Printed circuit board and component layout 8 3 Application hints 9 3.1 Biasing and SVR 9 3.2 Input stage . 9 3.3 Standby and muting 9 3.4 Diagnostics facility 10 3.5 Stability and layout considerations 12 4 Package information 13 5 Revision history . 14 2/15 Doc ID 4947 Rev 8