This part is a kind of semiconductor called TDA7374BV.

Function of this product has DUAL BRIDGE AUDIO AMPLIFIER FOR CAR RADIO.

Manufacturers : ST Microelectronics

Image and pinout :

Some of the text within the PDF file :

TDA7374B DUAL BRIDGE AUDIO AMPLIFIER FOR CAR RADIO MINIMUM EXTERNAL COMPONENT COUNT NO BOOTSTRAP CAPACITORS NO BOUCHEROT CELLS CLIP DETECTOR OUTPUT HIGH OUTPUT POWER FIXED GAIN VERY LOW STAND-BY CURRENT (1µA typ) NO SWITCH ON/OFF NOISE PROTECTIONS: OUTPUT AC/DC SHORT CIRCUIT TO GND AND TO VS VERY INDUCTIVE LOADS OVERRATING CHIP TEMPERATURE LOAD DUMP VOLTAGE FORTUITOUS OPEN GND REVERSE BATTERY ESD TEST AND APPLICATION CIRCUIT MULTIWATT 15 ORDERING NUMBERS: TDA7374BV DESCRIPTION The TDA7374B is a new technology class AB Audio Dual Bridge Power Amplifier in Multiwatt package designed for car radio applications. Thanks to the fully complementary PNP/NPN output configuration the high power performances of the TDA7374B are obtained without bootstrap capacitors. April 1995 1/13 TDA7374B PIN [ ... ]

TDA7374BV PDF Datasheet Download