Multi-chemistry charger controller in 8-TSSOP
The Texas Instruments BQ24401PWG4 is a multi-chemistry battery charger controller designed for charging a range of battery types — NiCd, NiMH, Li-Ion, and lead-acid — without requiring a separate chemistry-specific IC. It integrates a programmable timer for charge termination, making it suitable for standalone charger designs in consumer and industrial equipment where the battery chemistry may vary across product variants.
The device operates from a maximum supply voltage of 6V, which sets the input rail requirement for the charger circuit — a regulated 5V rail or a 6V wall adapter is typical.
The 8-TSSOP footprint is shared across the BQ24401 family, so a board layout for one member accepts the others.
