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Texas Instruments BQ27320YZFT — Power Management (PMIC / Gate Driver)

BQ27320YZFT Battery Monitor IC – Texas Instruments, 15-DSBGA

MPNBQ27320YZFT
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Texas Instruments BQ27320YZFT, single-cell Li-ion battery monitor, I²C interface, 15-DSBGA package, operating temperature -40°C to 85°C, ROHS3 compliant.

$3.6700Ref. price · indicative, final on quote
Texas Instruments BQ27320YZFT datasheet (PDF)
Packaging15-UFBGA, DSBGA
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ27320YZFT specifications
ParameterValue
MountingSurface Mount
InterfaceI²C
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionBattery Monitor
Case15-UFBGA, DSBGA
Number of cells1
Battery chemistryLithium Ion

Product details

Single-cell Li-ion fuel gauge in a DSBGA footprint

The BQ27320YZFT is a battery monitor IC from Texas Instruments designed for single-cell Lithium Ion battery packs. It communicates over I²C, making it a straightforward addition to any host controller that already has an I²C bus. The 15-DSBGA package (15-UFBGA, DSBGA) keeps the footprint small — critical for space-constrained portable designs.

Temperature grade and its procurement impact

It does not reach automotive temperature extremes (125°C) like the BQ79612PAPRQ1, so if your application sees under-hood or engine-bay heat, you need the automotive-grade sibling.

Packaging options for reflow planning

For rework, a hot-air nozzle with a fine tip and X-ray inspection after placement are standard.

Lifecycle and compliance posture

ROHS3 compliant, which covers the latest EU exemption updates.

Frequently asked questions

What is the difference between BQ27320 and BQ27421?

The BQ27320 is a single-cell battery monitor with I²C interface, while the BQ27421 is a different gauge variant with its own algorithm and feature set. For exact parametric differences, compare the datasheets — the BQ27320 uses TI's Impedance Track™ technology, whereas the BQ27421 uses a simpler voltage-based algorithm. No direct pin compatibility.

How to program BQ27320YZFT?

The BQ27320 is configured via I²C registers. Texas Instruments provides the bqStudio software tool and a USB-to-I²C adapter (EV2400 or similar) for initial setup and data logging. The device ships with default calibration; application-specific parameters (design capacity, taper rate, etc.) are written through the I²C interface.

Is BQ27320YZFT RoHS compliant?

Yes, it is ROHS3 Compliant, covering the latest ROHS exemption categories.