Texas Instruments BQ27510DRZT-G3, Impedance Track™ Series, Battery Monitor, I²C Interface, 1 Cell, Lithium Ion, -40°C to 85°C, 12-VFDFN Exposed Pad, 12-SON (2.5x4), Surface Mount, Active.
| 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 |
It communicates over an I²C bus and is packaged in a 12-VFDFN with exposed pad (12-SON 2.5x4 mm) for surface-mount assembly.
Single-cell support means this part is sized for a 1-series Li-ion stack (3.6 V nominal, 4.2 V full). The I²C interface lets a host MCU poll voltage, current, temperature, and remaining capacity without an ADC channel.
Yes — it is designed for single-cell Lithium Ion chemistry (3.6 V nominal). The Impedance Track™ algorithm learns the battery's discharge curve over cycles, so it works with any standard Li-ion cell that fits the 4.2 V full-charge profile.
The suffix distinguishes the tape-and-reel packaging option — DRZT is Tape & Reel (TR) with Cut Tape (CT) availability, while DRZR is a different reel format. The die, firmware, and electrical ratings are identical. Confirm the reel quantity and tape width your assembler needs before ordering.
Impedance Track™ is a TI-patented algorithm that combines voltage, current, temperature, and battery-impedance data to estimate state-of-charge. Basic coulomb counting only integrates current and drifts over time without a full-charge reset. Impedance Track™ self-corrects using the battery's open-circuit voltage and impedance profile, giving accurate remaining-capacity readings across temperature and load without requiring periodic full discharges.
Calibration involves writing the battery's design capacity, termination voltage, and impedance table parameters via I²C commands. Texas Instruments provides a software tool (bqStudio) and an application note for the calibration sequence — the gauge learns the cell's characteristics over the first few charge-discharge cycles if the initial data matches the cell datasheet.