This part is a kind of semiconductor called MIW5022.

Function of this product has (MIW5000 Series) Single & Dual Output DC/DC Converters.

Manufacturers : Minmax Technology

Image and pinout :

Some of the text within the PDF file :

MIW5000 Series 10W, Wide Input Range DIP, Single & Dual Output DC/DC Converters Key Features y High Efficiency up to 88% y 1500VDC Isolation y MTBF > 1,000,000 Hours y 2:1 Wide Input Range y CSA1950 Safety Approval y Complies with EN55022 Class A y Over Voltage Protection y Industry Standard Pinout y UL 94V-0 Package Material y Internal SMD Construction Minmax's MIW5000-Series power modules operate over input voltage ranges of 9-18VDC, 18-36VDC and 36-75VDC which provide precisely regulated output voltages of 2.5V, 3.3V, 5V, 5.1V, 12V, 15V, {12V and {15VDC. The MIW5000 series is an excellent selection for data communication equipments, mobile battery driven equipments, distributed power systems, telecommunication equipments, mixed analog/digital su [ ... ]

MIW5022 PDF Datasheet Download