BQ24040 in TI BQ24xxx / BQ25xxx Battery Charge Family
The BQ24040 series is a family of highly integrated Li-ion and Li-pol linear chargers manufactured by Texas Instruments. Designed for space-constrained portable applications, these ICs operate from either a USB port or an AC adapter. They offer a high input voltage range with input overvoltage protection, making them ideal for low-power consumer electronics that require a robust charging solution without the complexity or EMI concerns of switching regulators.
Variants in This Sub-Family
Variants within the BQ24040 sub-family primarily differ based on their fixed output voltage levels and charging safety timers. While the standard BQ24040 targets 4.2V cells, other versions such as the BQ24041 and BQ24045 offer different regulation voltages or specific status pin behaviors. Some models also vary in their default termination thresholds and the inclusion of specific thermal monitoring features for NTC thermistors.
