MAX712EVKIT
Overview
Features and Benefits
- Selectable Number of Cells (1 to 16)
- Selectable Maximum Fast-Charging Timeout
- Selectable Charging Current
- Battery Temperature Monitoring Capabilities
- Adjustable Temperature Limits
- LED Indication of Fast-Charge Cycle
- On-Board Battery Holder for 1 or 2 AA Cells
- Voltage-Slope Fast-Charge Termination
Product Details
The linear-mode evaluation kit (EV kit) is a complete battery charger for nickel metal hydride (NiMH) and "fast-charge" nickel-cadmium (NiCd) cells. The number of cells, charging current, and maximum charging time are selected by setting DIP switches. The board is easily tailored for the optimum charging parameters of a variety of "fast-charge" batteries, and can be used with either the MAX712 or MAX713.
The MAX712 EV kit automatically initiates the high- current, fast-charge cycle when batteries are installed into the holder. An LED indicates that the fast-charge sequence is in progress. Fast charge terminates when the maximum charging time has lapsed, or the circuit detects that full charge has been achieved, and/or if the temperature is beyond acceptable limits.
Thermistors are provided for optionally monitoring the battery temperature. The fast-charge cycle can be inhibited if the battery is too cold, or terminated if the battery temperature rises beyond limits. The temperature thresholds are adjustable using potentiometers on the board.
Applications
- Battery-Powered Applications
- Cell Phones
- Cordless Phones
- Handy Terminals
- Laptop, Notebook, and Palmtop Computers
- Portable Consumer Products
- Portable Stereos