Part Number : ISL6251
Function : Low Cost Multi Chemistry Battery Charger Controller
Package : QSOP 28 Pin type, QFN 28 PIn type
Maker : Intersil
Pinouts : 
Description :
The ISL6251, ISL6251A is a highly integrated battery charger controller for Li-Ion/Li-Ion polymer batteries and NiMH batteries. High Efficiency is achieved by a synchronous buck topology and the use of a MOSFET, instead of a diode, for selecting power from the adapter or battery.
The low side MOSFET emulates a diode at light loads to improve the light loadefficiency and prevent system bus boosting.
Features :
1. Programmable Charge Current Limit, Adapter Current Limit and Charge Voltage
2. Fixed 300kHz PWM Synchronous Buck Controller with Diode Emulation at Light Load
3. Output for Current Drawn from AC Adapter
4. AC Adapter Present Indicator
5. Fast Input Current Limit Response
6. Input Voltage Range 7V to 25V
Datasheet PDF Download : 
Others datasheet of same file :
ISL6251AHAZ, ISL6251AHRZ, ISL6251HAZ, ISL6251HRZ