bq2000 Switch-mode Multi-Chemistry Battery Charger

Texas Instruments bq2000 Switch-mode Multi-Chemistry Battery Charger is a programmable, monolithic IC for fast-charge management of nickel-cadmium (NiCd), nickel-metal-hydride (NiMH), or lithium-ion (Li-Ion) batteries in single- or multi-chemistry applications. TI bq2000 chooses the proper battery chemistry (either nickel or lithium) and proceeds with the optimal charging and termination algorithms. This process eliminates undesirable, undercharged, or overcharged conditions and allows accurate and safe termination of fast charges. TI bq2000 inhibits fast charge for safety until the battery voltage and temperature are within user-defined limits. If the battery voltage is below the low-voltage threshold, the bq2000 uses a trickle charge to condition the battery. For NiMH batteries, the bq2000 provides an optional top-off charge to maximize the battery capacity.