Single-cell Li-Ion charger with I²C programmability
The Texas Instruments BQ24187YFFR is a single-cell Li-Ion battery charger IC that accepts a supply up to 6 V and delivers a programmable constant charge current up to 2 A. It uses an I²C interface to set the charge current and the maximum battery pack voltage of 4.44 V, making it a fit for portable devices where the host microcontroller manages the charge profile.
Constant-current charging and fault protection
Yes, the BQ24187YFFR supports constant-current charging — the charge current is programmable via I²C, with a maximum of 2 A. The IC also includes over-temperature and over-voltage fault protection, covering the two most common failure modes in a single-cell Li-Ion charging path.
Obsolete — sourcing through independent distribution
The BQ24187YFFR is listed as obsolete by Texas Instruments. For existing BOM lines, last-time-buy inventory is exhausted through the factory channel; remaining stock is held by independent distributors and surplus brokers.
36-DSBGA package — layout and rework notes
The fine-pitch BGA requires a solder stencil with small apertures and a reflow profile matched to the 0.4 mm ball pitch. For rework, a hot-air nozzle with a matching footprint and pre-bake per J-STD-033 are recommended.