Texas Instruments Impedance Track™ series, BQ27425YZFT-G2A, single-cell Li-ion battery monitor, I²C interface, -40°C to 85°C, 15-DSBGA package
| Parameter | Value |
|---|---|
| Series | Impedance Track™ |
| Mounting | Surface Mount |
| Interface | I²C |
| Operating temperature | -40°C~85°C(TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Function | Battery Monitor |
| Case | 15-UFBGA, DSBGA |
| Number of cells | 1 |
| Battery chemistry | Lithium Ion |
Communication with the host is over I²C, making it a straightforward addition to a portable design running on a Cortex-M or similar MCU.
CT suits prototype or low-volume builds where reel quantities are unnecessary.
Impedance Track is a patented algorithm that learns the battery's impedance over temperature and state-of-charge. It corrects the fuel-gauge estimate in real time, so the reported remaining capacity stays accurate even as the cell ages or the load changes — unlike simple voltage-based gauges that drift after a few cycles.
Yes, the BQ27425YZFT-G2A is designed specifically for single-cell (1S) Lithium Ion packs, as indicated by its Number of Cells specification of 1.