Single-cell Li-ion fuel gauge with Impedance Track™
The Texas Instruments BQ27500DRZT-V120G4 is a single-cell battery monitor from the Impedance Track™ series, designed to provide accurate state-of-charge (SoC) and state-of-health (SoH) reporting for Lithium Ion packs. It communicates over an I²C interface and integrates over-temperature fault protection, making it a fit for portable and battery-backed equipment that needs reliable capacity tracking without a separate host-side algorithm.
Operating envelope and package
The 12-VFDFN exposed-pad package (supplier device package 12-SON, 2.5x4 mm) requires a thermal land pattern under the pad for heat sinking; the datasheet layout recommendation is the starting point for the PCB footprint.
