Analog Devices Inc.

500mA Li-Ion Charger with NTC Input and 300mA Synchronous Buck Features:Battery Charger: Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charge Rate Without Risk of Overheating Internal 4.5 Hour Safety Timer for Termination Charge Current Programmable Up to 500mA with 5% Accuracy NTC Thermistor Input for Temperature Qualified Charging C/10 Charge Current Detection Output 5µA Supply Current in Shutdown ModeSwitching Regulator: High Efficiency Synchronous Buck Converter 300mA Output Current (Constant-Frequency Mode) 2.7V to 4.5V Input Range (Powered from BAT Pin) 0.8V to VBAT Output Range MODE Pin Selects Fixed (2.25MHz) Constant-Frequency PWM Mode or Low ICC (23µA) Burst Mode® Operation 2µA BAT Current in Shutdown Mode 10-lead, low profile (0.75 mm) 3mm × 3mm DFN package

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