Single-cell Li-Ion fuel gauge with Impedance Track
The BQ27500DRZR-V120G4 is a single-cell Li-Ion battery monitor from TI's Impedance Track series, communicating over an I²C bus. It tracks remaining capacity, voltage, current, and temperature for one series cell, with the Impedance Track algorithm compensating for aging and discharge-rate effects — meaning the reported state-of-charge stays accurate across the battery's service life without a full-learn cycle.
Package and board-fit: 12-VFDFN with exposed pad
The I²C interface runs on the host side; no external ADC or coulomb counter is needed because the gauge integrates the sense element. Over-temperature fault protection is built in, tripping the alert line if the die exceeds the safe threshold.
Active production — sourced per RFQ
Texas Instruments lists the BQ27500DRZR-V120G4 as Active (current production).