FEATURES
® Fast charge of nickel cadmium or nickel-metal hydride batteries ® Direct LED output displays charge status ® Fast-charge termination by -∆V, maximum voltage, maximum temperature, and maximum time ® Internal band-gap voltage reference ® Optional top-off charge ® Selectable pulse trickle charge rates ® Low-power mode ® 8-pin 300-mil DIP or 150-mil SOIC Pin Connections GENERAL DESCRIPTION
The bq2002E and bq2002G FastCharge ICs are low-cost CMOS battery-charge controllers providing reliable charge termination for both NiCd and NiMH battery applications. Controlling a current-limited or constant-current supply allows the bq2002E/G to be the basis for a costeffective stand-alone or system-integrated charger. The bq2002E/G integrates fast charge with optional top-off and pulsed- trickle control in a single IC for charging one or more NiCd or NiMH battery cells. Fast charge is initiated on application of the charging supply or battery replacement. For safety, fast charge is inhibited if the battery temperature and voltage are outside configured limits.
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