DESCRIPTION

The SC1766 fast charge controller IC is designed for intelligent charging of NiMH or NiCd batteries without overcharging. It detects a voltage drop (-?V) occurring in the final stage of a fast charging cycle and correspondingly controls the charging current. Fast charge can also be cut off by a peak voltage timer (0?V).

FEATURES

? Reliable fast charge control of NiMH/NiCd batteries

? Fast charge termination by:

1 Accurate -?V detection level -0.25 with respect to peak value

2 Peak voltage timer (0?V)

? Adjustable fast charge safety timer

? Protection against temperature fault

? Protection against short-circuited and open batteries

? Wide operation voltage range of 9V to 18V, no extra regulator needed

? Large battery voltage detection range of 0.65V to 3.7V

? LED drivers to indicate charge status or fault conditions

? Voltage reference output

? Quick and easy testing for production

? Space saving 8-pin and 14-pin SO packages

APPLICATIONS

Battery chargers for:

? Mobile phones

? Notebook and laptop personal computers

? Portable power tools and toys

? Portable communications equipment

? Portable video and stereo equipment