Single-cell Li-Ion charger with I²C programmability
The BQ24261MYFFT is a single-cell Li-Ion battery charger IC from Texas Instruments, packaged in a 36-DSBGA (2.63x2.46 mm) footprint. It manages charge current up to 3 A with a programmable constant-current profile set via the I²C interface. The device targets portable and space-constrained designs where the DSBGA package saves board area but requires careful reflow profiling and X-ray inspection for voiding under the bumps.
Charge termination and protection set
Battery pack voltage terminates at 3.5 V, and the charger integrates over-temperature and over-voltage fault protection to prevent runaway during fault conditions. The supply input accepts up to 13.2 V maximum, giving headroom for 5 V USB or 12 V wall-adapter rails without an external pre-regulator.
Texas Instruments has marked the BQ24261MYFFT as obsolete. Quantities are lot-specific and confirmed at RFQ; no pin-compatible direct replacement from TI has been published.