8 A fast-charge switcher in a 3.33×2.93 mm DSBGA
The Texas Instruments BQ25971YFFT is a multi-chemistry battery charger IC that delivers up to 8 A charge current from a 12 V max supply, configured via an I²C interface. It packs over-current and over-voltage fault protection into a 56-DSBGA package measuring 3.33×2.93 mm, making it a dense solution for space-constrained portable electronics.
Charge current and thermal design
At 8 A max, the BQ25971YFFT targets single-cell battery packs up to 4.65 V.
I²C control and fault monitoring
The I²C interface lets the system host set charge parameters — current, voltage, termination threshold — and read fault status. Over-current and over-voltage protection are integrated, reducing external component count. The single-cell charge voltage of 4.65 V is above the typical 4.2 V Li-ion termination, so confirm the battery chemistry supports this ceiling before committing the BOM.