This part is a kind of semiconductor called UAA4002.

Function of this product has Control Circuit for Fast Switching Transistors.

Manufacturers : ST Microelectronics

Image and pinout :

Some of the text within the PDF file :

w w a D . w S a t e e h U 4 t m o .c w w w t a .D S a e h U 4 t e .c m o w w w .D a t a e h S 4 t e U m o .c [ ... ]

UAA4002 PDF Datasheet Download