This part is a kind of semiconductor called IT7652.

Function of this product has 2A/18V High Efficiency Synchronous Rectified Step-Down DC/DC Converter.

Manufacturers : ITE Tech

Image and pinout :

Some of the text within the PDF file :

IT7652 2A/18V High Efficiency Synchronous Rectified Step-Down DC/DC Converter Preliminary Specification V0.1.2 ITE TECH. INC. This specification is subject to Change without notice. It is provided “AS IS” and for reference only. For purchasing information, please contact the nearest ITE TECH sales representatives. Copyright © 2010 ITE Tech. Inc. Confidentiality Statement: This Data Sheet (including any attachments) is for the sole use of the intended recipient(s) and contains confidential, proprietary and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please immediately destroy all copies of the original message. This is a Preliminary document release. All specifications are subject to change wi [ ... ]

IT7652 PDF Datasheet Download