ISL6252, ISL6252A is a battery charger controller for Li-Ion/Li-Ion polymer batteries from Intersil, supporting 2, 3, and 4 series Li-Ion cells, high efficiency synchronous buck topology, low side MOSFET emulates a diode at light loads to improve the light load efficiency and prevent system bus boosting.
The ISL6252 and ISL6252A are highly integrated battery‑charger controllers designed for Li‑ion and Li‑polymer cells in notebook, sub‑notebook and PDA applications. They use a synchronous buck topology with diode‑emulation at light load to achieve high efficiency and include programmable charge‑voltage, current‑limit and adapter‑current settings.
The device supports 2‑, 3‑ and 4‑cell battery packs, offers a wide input voltage range (7 V‑25 V), and provides monitoring outputs for adapter presence and current. Detailed electrical specifications, pin‑outs, package dimensions and absolute maximum ratings are provided for design engineers.
| Charge Voltage Accuracy | ±0.5 % |
|---|---|
| Input Current Limit Accuracy | ±3 % |
| Battery Charge Current Limit Accuracy | ±3 % |
| Input Voltage Range | 7 V to 25 V |
| Oscillator Frequency | 245 kHz – 355 kHz |
| Maximum Duty Cycle | up to 99.6 % |
The controller operates with an input voltage from 7 V to 25 V.
It supports 2‑, 3‑ and 4‑cell battery packs.
The charge‑voltage accuracy is ±0.5 % over the temperature range –10 °C to +100 °C.
The internal oscillator runs between 245 kHz and 355 kHz.