AF4057 1.
1A Lithium Ion Battery Linear Charger GENERAL DESCRIPTION AF4057 is a complete CC/CV linear charger for single cell lithium-ion batteries.
It is specifically designed to work within USB power Specifications.
No external sense resistor is needed and no blocking diode is required due to the internal P-MOSFET architecture.
Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature .
The charge voltage is fixed at 4.
35V, and the charge current can be programmed externally with a single resistor.
The AF4057 automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the...

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