Texas Instruments Impedance Track™ series, BQ27441DRZR-G1B single-cell Li-Ion battery fuel gauge, I²C interface, 12-VFDFN Exposed Pad package, -40°C to 85°C operating range.
| 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 | 12-VFDFN Exposed Pad |
| Number of cells | 1 |
| Battery chemistry | Lithium Ion |
The BQ27441DRZR-G1B is a single-cell Lithium Ion battery fuel gauge from Texas Instruments' Impedance Track™ series. It reports remaining capacity, state-of-charge, and voltage over an I²C bus — no external current-sense resistor needed, because the algorithm learns the battery's impedance from its own discharge curve.
Housed in a 12-VFDFN with exposed pad (12-SON, 2.5x4 mm body).
ROHS3 compliant.
Impedance Track™ learns the battery's impedance by measuring voltage, current, and temperature during discharge. It updates a model of the battery's internal resistance and capacity, which lets the gauge report state-of-charge accurately even as the cell ages or the temperature changes. No external sense resistor is required.