This part is a kind of semiconductor called TDA7388.

Function of this product has 4 X 41W QUAD BRIDGE CAR RADIO AMPLIFIER.

Manufacturers : STMicroelectronics

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TDA7388 4 x 45 W quad bridge car radio amplifier Datasheet - production data  Low external component count: – Internally fixed gain (26 dB) – No external compensation – No bootstrap capacitors '!0'03 Flexiwatt25 Features  High output power capability: – 4 x 45 W / 4  max. – 4 x 26 W / 4  @ 14.4 V, 1 kHz, 10 %  Low distortion  Low output noise  Standby function  Mute function  Automute at min. supply voltage detection Protections:  Output short circuit to gnd, to VS, across the load  Very inductive loads  Overrating chip temperature with soft thermal limiter  Load dump voltage  Fortuitous open GND  Reversed battery  ESD Description The TDA7388 is an AB class audio power amplifier, packaged in Flexiwatt 25 and designed for h [ ... ]

TDA7388 PDF Datasheet Download