Single-cell Li-ion fuel gauge with Impedance Track™
It communicates over an I²C interface and is packaged in a 12-VFDFN Exposed Pad (12-SON 2.5x4 mm). The Impedance Track™ algorithm learns the cell's impedance over temperature and age, so the reported remaining capacity stays reliable as the battery degrades.
That covers industrial outdoor gear, cold-chain loggers, and automotive cabin-zone applications. The I²C interface runs at standard and fast-mode speeds; pull-up resistors to the host rail are required. The single-cell input range matches a 1-series Li-ion stack — do not connect a 2S pack directly without an external divider or a different gauge part.
It remains a current-design-in part for new single-cell Li-ion gauge applications. Sourced through independent distribution.