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LTC4053-4.2
USB Compatible Lithium-Ion Battery Charger
with Thermal Regulation
FEATURES
■ Charges Single-Cell Li-Ion Batteries Directly from USB Port
■ Thermal Regulation Maximizes Charge Rate without Risk of Overheating*
■ Programmable Charge Current with ±7% Accuracy ■ Low Dropout Operation ■ No External MOSFET, Sense Resistor or Blocking
Diode Required ■ Programmable Charge Termination Timer ■ Preset Charge Voltage with ±1% Accuracy ■ C/10 Charge Current Detection Output ■ AC Present Logic Output ■ 25µA Supply Current in Shutdown Mode ■ Automatic Recharge ■ Charge Current Monitor Useful for Gas Gauging ■ Thermistor Input for Temperature Qualified Charging ■ Available in 10-pin thermally enhanced MSOP and
low profile (0.