7 A charge current in a 2.8x2.5 mm footprint
The BQ25871YFFT is a single-cell Li-Ion battery charger IC from Texas Instruments that pushes up to 7 A of constant charge current into the battery pack. Communication with the host processor runs over an I²C interface, so the charge current, termination voltage, and safety timers can be tuned in firmware rather than with external resistors. This is the same control scheme used across TI's I²C-charger family; the BQ25871 sits as the high-current option for single-cell designs.
Fault protection that saves the BOM
The IC integrates overcurrent, overtemperature, overvoltage, and reverse-current protection. That means the charger itself handles the safety monitoring — no separate supervisor IC or external comparator needed on the charge path. For a procurement buyer, this collapses the BOM count around the charger and reduces qualification effort. If your device lives in a hot enclosure or sees outdoor exposure, the charger's thermal regulation loop will back off the charge current before the die hits the overtemperature threshold, keeping the system running without a hard shutdown.
Active production and compliance
The base product number BQ25871 covers the family; the YFFT suffix denotes the 42-DSBGA package and tape-and-reel / cut-tape delivery.