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Texas Instruments BQ27441DRZT-G1B — Power Management (PMIC / Gate Driver)

BQ27441DRZT-G1B Battery Fuel Gauge, Impedance Track, I²C

MPNBQ27441DRZT-G1B
Active

Texas Instruments BQ27441DRZT-G1B, Impedance Track™ series, Battery Monitor, I²C, 1-cell Li-Ion, -40°C to 85°C, 12-VFDFN Exposed Pad, Surface Mount, ROHS3.

$3.0500Ref. price · indicative, final on quote
Texas Instruments BQ27441DRZT-G1B datasheet (PDF)
Packaging12-VFDFN Exposed Pad
RoHSROHS3 Compliant
SeriesImpedance Track™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ27441DRZT-G1B specifications
ParameterValue
SeriesImpedance Track™
MountingSurface Mount
InterfaceI²C
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionBattery Monitor
Case12-VFDFN Exposed Pad
Number of cells1
Battery chemistryLithium Ion

Product details

What this fuel gauge does — and why the Impedance Track™ matters

Unlike a simple voltage-based gauge, Impedance Track™ learns the battery's impedance over temperature and discharge rate, so the reported capacity stays accurate as the cell ages. It communicates over an I²C interface, making it a straightforward addition to a portable-device BOM — no SMBus or SPI host required. The part is specified for one Li-Ion cell only, so a 2S or 4S pack needs a different gauge in the family.

The BQ27441DRZT-G1B comes in a 12-VFDFN with an exposed pad (the supplier device package is 12-SON, 2.5x4 mm). This temperature grade covers most portable, handheld, and industrial equipment, but it does not extend to automotive under-hood or engine-bay environments.

Frequently asked questions

What battery chemistries and cell configurations does BQ27441DRZT-G1B support?

The BQ27441DRZT-G1B supports a single lithium-ion cell. It is not designed for 2S or higher cell counts, nor for lithium-polymer or other chemistries outside the Li-Ion family.

Can I replace BQ27441DRZT-G1B with BQ27441DRZT?

The base product number is BQ27441, and the suffix -G1B indicates a specific firmware/configuration variant. The BQ27441DRZT (without -G1B) may have different default settings or gauge parameters. Verify compatibility against your system's firmware requirements before substituting.