This part is a kind of semiconductor called IR2109.

Function of this product has HIGH AND LOW SIDE DRIVER.

Manufacturers : International Rectifier

Image and pinout :

Some of the text within the PDF file :

Data Sheet No. PD60163-P IR2109(4) (S) HALF-BRIDGE DRIVER Features • Floating channel designed for bootstrap operation • • • • • • • • • • Product Summary VOFFSET IO+/VOUT ton/off (typ.) Dead Time 600V max. 120 mA / 250 mA 10 - 20V 750 & 200 ns 540 ns Fully operational to +600V Tolerant to negative transient voltage dV/dt immune Gate drive supply range from 10 to 20V Undervoltage lockout for both channels 3.3V, 5V and 15V input logic compatible Cross-conduction prevention logic Matched propagation delay for both channels High side output in phase with IN input Logic and power ground +/- 5V offset. Internal 540ns dead-time, and programmable up to 5us with one external RDT resistor (IR21094) Lower di/dt gate driver for better noise immunity Shut [ ... ]

IR2109 PDF Datasheet Download