Datasheet Summary
LTC4055/LTC4055-1
USB Power Controller and Li-Ion Charger
Features
DESCRIPTION n Charges Single-Cell Li-Ion Batteries Directly from USB Port n Load Dependent Charging Guarantees USB Input Current pliance n Automatic Battery Switchover When Input Supply is Removed n Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charging Rate Without Risk of Overheating- n Selectable 500mA/100mA Current Limit n Low Loss Full PowerPath™ Control with Ideal Diode
Operation (Reverse Current Blocking) n Preset 4.2V Charge Voltage with 0.8% Accuracy
(4.1V for LTC4055-1) n 4.1V Float Voltage (LTC4055-1) Improves Battery Life and High Temperature Safety Margin n USB-pliant...