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General Description

The MAX8606 complete 1-cell Li+ battery charge-management IC operates from either a USB port or AC adapter. It integrates a battery disconnect switch, current-sense circuit, PMOS pass element, and thermal-regulation circuitry, while eliminating the external reverse-blocking Schottky diode, to create a simple and small charging solution. The charging sequence initiates from power-OK indication, through prequalification, fast-charge, top-off charge, and finally charging-complete indication for single-cell Li+ batteries. Charging is controlled using constant current, constant voltage, or constant die-temperature (CCCVCTJ) regulation for safe operation in handhelds.

Features

? Small 3mm x 3mm Thermally Enhanced TDFN Package (0.8mm max height)

? USB-Compliant Suspend Mode (20μA)

? Selectable 100mA, 500mA, and Up to 1A Input Current Limits

? USB or AC Adapter Input

? +6V to +14V Input Overvoltage Protection

? Input UVLO Below +4V Rising (3.5V Falling)

? Automatic Current Sharing Between Battery Charging and System

? Die Temperature Regulation (+100°C)

? Prequal, Fast-Charge, and Top-Off Timers

? Low Dropout Voltage, 250mV at 0.5A

? NTC Thermistor Input

? Charge Status and Input-Supply Detection Flags

Applications

??? Cellular Phones, Smartphones, PDAs

??? Digital Cameras, MP3 Players

??? USB Appliances, Charging Cradles and Docks