BQ24040RGTR in TI BQ24xxx / BQ25xxx Battery Charge Family
The BQ24040RGTR belongs to a family of highly integrated, single-cell Li-Ion and Li-Pol battery chargers manufactured by Texas Instruments. Designed for space-constrained portable applications, these linear chargers operate from either a USB port or an AC adapter. The family is characterized by high input voltage ranges and integrated safety features like thermal regulation and battery thermistor monitoring, making them a reliable choice for charging small-capacity batteries safely and efficiently.
Variants within the BQ2404x sub-family primarily differ in their fixed output voltage settings (typically 4.2V or 4.35V) and their behavior regarding the Pre-term/ISET2 pins. Some models offer different Overvoltage Protection (OVP) thresholds or variations in the termination current thresholds. Package types are generally consistent, utilizing the small 2mm x 2mm WSON footprint to maintain compatibility across different charge profiles.
