The BQ24166YFFT from Texas Instruments is a single-cell Li-ion battery charger with a USB interface, delivering a programmable constant charge current up to 2.5 A. That 2.5 A ceiling is the maximum the part can source into the battery; the actual charge rate is set by an external resistor or I2C command, so the same part can serve a 500 mA wearable or a 2 A tablet without a BOM change. The 49-DSBGA (2.8x2.8 mm) package keeps the footprint small enough for space-constrained portable designs.
Industrial temperature grade and protection
On-chip fault protection covers over-temperature and short-circuit conditions — the part will shut down before the battery or the PCB trace sees a fault current it cannot handle.
For a production BOM that needs a single-cell Li-ion charger with USB input, this part is a current-design-in candidate with no near-term obsolescence concern.