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