Single-cell Li-Ion fuel gauge with Impedance Track™
The BQ27441DRZR-G1A is a single-cell Li-Ion battery fuel gauge from Texas Instruments' Impedance Track™ series, designed to report remaining capacity, state-of-charge, and voltage via an I²C interface.
Housed in a 12-VFDFN exposed pad package (12-SON, 2.5x4 mm), the part is surface-mount and hand-solderable with a hot-air station — the exposed pad needs a thermal via to the ground plane for heat sinking.
The base product number is BQ27441DRZR-G1, so the -G1A suffix denotes a specific configuration variant; confirm the exact order code against your BOM.