This part is a kind of semiconductor called TDA7388A.

Function of this product has 4 x 42W quad bridge car radio amplifier.

Manufacturers : STMicroelectronics

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Some of the text within the PDF file :

TDA7388A 4 x 42 W quad bridge car radio amplifier Datasheet - production data '!0'03 Flexiwatt27 Features  High output power capability: – 4 x 42 W / 4  max. – 4 x 27 W / 4  @ 14.4 V, 1 kHz, 10 %  Low distortion  Low output noise  Standby function  Mute function  Automute at min. supply voltage detection  Low external component count: – Internally fixed gain (26 dB) – No external compensation – No bootstrap capacitors  Clipping detector  Offset detector  Diagnostic facility for: – Out to GND short – Out to VS short – Thermal shutdown  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 G [ ... ]

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