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MAX1811 USB-Powered Li+ Charger General 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 500mA 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 100mA or 500mA.
An open-drain output (CHG) indicates charge status.
The MAX1811 has preconditioning tha...

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