This part is a kind of semiconductor called ISL6258.

Function of this product has Narrow VDC Regulator/Charger.

Manufacturers : Intersil

Image and pinout :

Some of the text within the PDF file :

ISL6258, ISL6258A To request the full datasheet, please visit www.intersil.com/products/ISL6258 or ISL6258A Data Sheet December 11, 2007 FN6571.1 Narrow VDC Regulator/Charger with SMBus Interface The ISL6258, ISL6258A are a highly integrated Narrow VDC system voltage regulator and battery charger controller. Operating parameters are programmable over the System Management Bus (SMBus). The ISL6258, ISL6258A are designed for applications where the system power source is either the battery pack or the output of the regulator/charger. This makes the max voltage to the system equal to the max battery voltage instead of the max adapter voltage. The ISL6258, ISL6258A also include a system to control trickle charging deeply discharged batteries while maintaining system voltage at a user defin [ ... ]

ISL6258 PDF Datasheet Download