This part is a kind of semiconductor called CAT7105.

Function of this product has 2.0A High Efficiency Step-Down DC/DC Converter.

Manufacturers : Chip Advanced Technology

Image and pinout :

Some of the text within the PDF file :

CAT7105 2.0A High Efficiency Step-Down DC/DC Converter CAT7105 2.0A High Efficiency Step-Down DC/DC Converter Features High Efficiency up to 95% 4.75V to 23V Wide Input Voltage Range Output Adjustable from 1.23 to 21V 2.0A Output Current 380kHz constant Frequency Operation Current Mode Operation Over-temperature Protected Over Current Protection Under Voltage Lockout 25µA Shutdown Current SOP8 Package RoHS Compliant (100% Green available) Application Set-Top-Box, DVD, LCD Displays Battery Charger and High Power LED Power Supply Distributed Power System Data comm. xDSL CPE Pin Configuration General Description The CAT7105 is a high efficiency and high output current step-down DC/DC converter that integrates a low resistance high side NMOS. In [ ... ]

CAT7105 PDF Datasheet Download