Update: 30 September, 2023
The ISL6257 is a highly integrated Li-Ion/Li-Ion polymer battery charger controller designed for notebook computers. It uses a synchronous buck topology to achieve high efficiency at low system voltages. The low-side MOSFET emulates a diode at light loads to improve light load efficiency and prevent system bus boosting. The constant output voltage can be selected for 2, 3 and 4 series Li-Ion cells with ±0.5% accuracy over temperature. It can also be programmed between 4.2V + 5% per cell and 4.2V - 5% per cell to optimize battery capacity. When supplying the load and battery charger simultaneously, the input current limit for the AC adapter is programmable to within ±3% accuracy to avoid overloading the AC adapter and to allow the system to make efficient use of the available power.
File format: PDF
Size: -
MD5 Checksum: 47F32BCF2519D31170EA691A3FACB97D
Publication date: 09 May, 2012
Downloads: -
PDF Link: INTERSIL - ISL6257 handbook PDF