No last-time-buy window remains open through the factory channel. Any stock in the independent distribution pipeline is what is left — no new production runs. The part is a single-cell Lithium Ion charger with an I²C interface for programming charge current and battery regulation voltage up to 4.44 V max. Max charge current is 2 A.
The BQ24188YFFR comes in a 36-ball DSBGA measuring 2.63 x 2.46 mm. No leads, no exposed thermal pad — the die sits on the board through solder balls. This is not a hand-solder part; it needs a reflow oven or hot-air station with a fine nozzle and a profile matched to the 0.4 mm ball pitch. Surface mount only. Fault protection includes over-temperature shutdown. The charger uses constant-current / constant-voltage algorithm with programmable current via I²C.
Sourcing an obsolete charger — what to expect
Because TI has discontinued the BQ24188YFFR, procurement must source through independent distributors and brokers who hold remaining factory inventory or surplus stock. A design review is required to qualify an alternative charger IC for the same BOM position.