The ISL9203ACRZ-T 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. The ISL9203ACRZ-T operates as a linear charger when the AC adapter is a voltage source. The battery is charged in a Constant Current/Constant Voltage (CC/CV) profile. The charge current is programmable with an external resistor up to 1.5A. The ISL9203ACRZ-T can also work with a current-limited adapter to minimize the thermal dissipation, in which case the ISL9203ACRZ-T combines the benefits of both a linear charger and a pulse charger.
The ISL9203ACRZ-T features charge current thermal foldback to ensure safe operation when the Printed Circuit Board (PCB) is space limited for thermal dissipation. Additional features include preconditioning of an over-discharged battery and thermally enhanced DFN package.
Feature
- 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 1.5A
- Charge current thermal foldback
- Accepts multiple types of adapters
- Operation down to VIN = 2.65V after startup
- Ambient temperature range: -20°C to +70°C
- Thermally-enhanced DFN packages
- Pb-free (RoHS compliant)
