Analog Devices Inc.

USB Power Manager with Low-Loss Ideal Diode and Li-Ion Battery Charger Features: Seamless Transition Between Input Power Sources: Li-Ion Battery, USB and 5V Wall Adapter Low Loss (50mΩ) Ideal Diode Path from BAT to OUT Programmable Charge Current Detection (CHRG) Load Dependent Charging Guarantees USB Input Current Compliance Analog Gas Gauge Function Charges Single Cell Li-Ion Batteries Directly from USB Port Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charging Rate Without Risk of Overheating* Selectable 100% or 20% Current Limit (e.g., 500mA/100mA) Termination Timer Adapts to Actual Charge Current Preset 4.2V Charge Voltage with 0.8% Accuracy (4.1V for LTC4066-1) NTC Thermistor Input for Temperature Qualied Charging Thin Prole (0.75mm) 24-Lead 4mm x 4mm QFN Package Ultrathin Prole (0.55mm) 24-Lead 4mm x 4mm UTQFN Package (LTC4066 Only)

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