ISL6292 is an integrated single-cell Li-ion or Li-polymer battery charger capable of operating with an input voltage as low as 2.4V. This charger is designed to work with various types of AC adapters or a USB port. The ISL6292 operates as a linear charger when the AC adapter is a voltage source. The battery is charged in a CC/CV (constant current/constant voltage) profile. The charge current is programmable with an external resistor up to 2A. The ISL6292 can also work with a current-limited adapter to minimize the thermal dissipation. In this case, the ISL6292 combines the benefits of both a linear charger and a pulse charger. The ISL6292 features charge current thermal foldback to guarantee safe operation when the printed circuit board is space limited for thermal dissipation. Additional features include preconditioning of an over-discharged battery, an NTC thermistor interface for charging the battery in a safe temperature range, automatic recharge, and thermally enhanced QFN or DFN packages. Features • Complete Charger for Single-Cell Li-ion Batteries • Very Low Thermal Dissipation • Integrated Pass Element and Current Sensor • No External Blocking Diode Required • 1% Voltage Accuracy • Programmable Current Limit up to 2A • Programmable End-of-Charge Current • Charge Current Thermal Foldback • NTC Thermistor Interface for Battery Temperature Monitor • Accepts Multiple Types of Adapters or USB BUS Power • Guarantee
The ISL6292 is an integrated single‑cell Li‑ion or Li‑polymer battery charger that can operate from a low input voltage as low as 0.6 V. It supports both linear and pulse charging modes, provides charge‑current thermal foldback, and includes an NTC thermistor interface for temperature monitoring. The device is offered in thermally‑enhanced QFN and DFN packages suitable for handheld devices, portable instruments, and stand‑alone chargers.
Key features include programmable charge current up to 2 A, 1 % voltage accuracy, automatic recharge, and operation over an ambient temperature range of –20 °C to +70 °C. The datasheet provides absolute maximum ratings, recommended operating conditions, pin descriptions, typical application circuits, and detailed package dimensions.
| Battery Output Voltage (BAT) | 0.3 V to 5.5 V |
|---|---|
| Programmable Charge Current | up to 2 A |
| Ambient Temperature Range | -20 °C to +70 °C |
| Current Foldback Gain | 100 mA/°C |
The charge current can be programmed up to 2 A using an external resistor.
It is rated for operation from –20 °C to +70 °C.