General Description
The MAX712/MAX713 fast-charge Nickel Metal Hydride (NiMH) and Nickel Cadmium (NiCd) batteries from a DC source at least 1.5V higher than the maximum battery voltage. 1 to 16 series cells can be charged at rates up to 4C. A voltage-slope detecting analog-to-digital converter, timer, and temperature window comparator determine charge completion.

Features
♦ Fast-Charge NiMH or NiCd Batteries
♦ Voltage Slope, Temperature, and Timer Fast-Charge Cutoff
♦ Charge 1 to 16 Series Cells
♦ Supply Battery’s Load While Charging (Linear Mode)
♦ Fast Charge from C/4 to 4C Rate
♦ C/16 Trickle-Charge Rate
♦ Automatically Switch from Fast to Trickle Charge
♦ Linear or Switch-Mode Power Control
♦ 5µA (max) Drain on Battery when Not Charging
♦ 5V Shunt Regulator Powers External Logic

Applications
    Battery-Powered Equipment
        Laptop, Notebook, and Palmtop Computers
        Handy-Terminals
        Cellular Phones
    Portable Consumer Products
        Portable Stereos
        Cordless Phones