The 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 which 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

? Guaranteed to Operate at 2.65V After Start-Up

? Ambient Temperature Range: -20°C to +70°C

? Thermally-Enhanced QFN Packages

? Handheld Devices, including Medical Handhelds

? PDAs, Cell Phones and Smart Phones

? Portable Instruments, MP3 Players

? Self-Charging Battery Packs

? Stand-Alone Chargers

? USB Bus-Powered Chargers

? Pb-Free Available (RoHS Compliant)