The ISL6256, ISL6256A is a highlyintegrated battery charger controller for Li-Ion/Li-Ion polymer 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 load efficiency and prevent system bus boosting.
●Features
●• ±0.5% Charge Voltage Accuracy (-10°C to +100°C)
●• ±3% Accurate Input Current Limit
●• ±3% Accurate Battery Charge Current Limit
●• ±25% Accurate Battery Trickle Charge Current Limit
●• Programmable Charge Current Limit, Adapter Current
●Limit and Charge Voltage
●• Fixed 300kHz PWM Synchronous Buck Controller with
●Diode Emulation at Light Load
●• Overvoltage Protection
●• Output for Current Drawn from AC Adapter
●• AC Adapter Present Indicator
●• Fast Input Current Limit Response
●• Input Voltage Range 7V to 25V
●• Support 2-, 3- and 4-Cells Battery Pack
●• Up to 17.64V Battery-Voltage Set Point
●• Control Adapter Power Source Select MOSFET
●• Thermal Shutdown
●• Aircraft Power Capable
●• DC Adapter Present Indicator
●• Battery Discharge MOSFET Control
●• Less than 10µA Battery Leakage Current
●• Supports Pulse Charging
●• Pb-Free Plus Anneal Available (RoHS Compliant)
●Applications
●• Notebook, Desknote and Sub-notebook Computers
●• Personal Digital Assistant
