MAX1811
Description
The MAX1811 is a single-cell lithium-ion (Li+) battery charger that can be powered directly from a USB port- or from an external supply up to 6.5V. It has a 0.5% overall battery regulation voltage accuracy to allow maximum utilization of the battery capacity.
The charger uses an internal FET to deliver up to 500m A charging current to the battery. The device can be configured for either a 4.1V or 4.2V battery, using the SELV input. The SELI input sets the charge current to either 100m A or 500m A. An open-drain output (CHG) indicates charge status.
The MAX1811 has preconditioning that soft-starts a near-dead battery cell before charging. Other safety features include continuous monitoring of voltage and current and initial checking for fault conditions before charging.
The MAX1811 is available in a small 1.4W thermally enhanced 8-pin SO package.
Applications
- - PDAs and Palmtops
- - Digital Still Cameras
- - MP3 Players
- - Cell Phones
- - Two-Way Pagers
- - Hand-Held...
