LTC4081 Datasheet (Linear Technology)

LTC4081, 500mA Li-Ion Charger

The LTC®4081 is a complete constant-current/constantvoltage linear battery charger for a single-cell 4.2V lithium-ion/polymer battery with an integrated 300mA synchronous buck converter.

A 3mm × 3mm DFN package and low external component count make the LTC4081 especially suitable for portable applic

LTC4081 Features

* Battery Charger: nn Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charge Rate without Risk of Overheating nn Internal 4.5-Hour Safety Timer for Termination nn Charge Current Programmable Up to 500mA with 5% Accuracy nn NTC Thermistor Input for Temperature Qualified Ch