This part is a kind of semiconductor called TDA7293.
Function of this product has 120V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY.
Manufacturers : ST Microelectronics
Image and pinout :
Some of the text within the PDF file :
® TDA7293 120V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY VERY HIGH OPERATING VOLTAGE RANGE (±50V) DMOS POWER STAGE HIGH OUTPUT POWER (100W @ THD = 10%, RL = 8Ω, VS = ±40V) MUTING/STAND-BY FUNCTIONS NO SWITCH ON/OFF NOISE VERY LOW DISTORTION VERY LOW NOISE SHORT CIRCUIT PROTECTION THERMAL SHUTDOWN CLIP DETECTOR MODULARITY (MORE DEVICES CAN BE EASILY CONNECTED IN PARALLEL TO DRIVE VERY LOW IMPEDANCES) DESCRIPTION The TDA7293 is a monolithic integrated circuit in Multiwatt15 package, intended for use as audio class AB amplifier in Hi-Fi field applications (Home Stereo, self powered loudspeakers, TopFigure 1: Typical Application and Test Circuit MULTIPOWER BCD TECHNOLOGY Multiwatt15 ORDERING NUMBER: TDA7293V class TV). Thanks to the wide voltage range and to the high out current cap [ ... ]