Skip to main content
Log in
Texas Instruments BQ27742YZFT-G1 — Power Management (PMIC / Gate Driver)

BQ27742YZFT-G1 Multi-Function Controller, Li-Ion Fuel Gauge

MPNBQ27742YZFT-G1
Active

Texas Instruments BQ27742YZFT-G1, Multi-Function Controller, Li-Ion Battery Fuel Gauge, Single Cell, I²C/HDQ Interface, Fault Protection, -40°C~85°C, 15-DSBGA Package, Tape & Reel.

$3.5800Ref. price · indicative, final on quote
Texas Instruments BQ27742YZFT-G1 datasheet (PDF)
Packaging15-UFBGA, DSBGA
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ27742YZFT-G1 specifications
ParameterValue
MountingSurface Mount
InterfaceHDQ, I²C
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionMulti-Function Controller
Case15-UFBGA, DSBGA
Number of cells1
Fault protectionOver Current, Over/Under Voltage, Short Circuit
Battery chemistryLithium Ion

Product details

The Texas Instruments BQ27742YZFT-G1 is a multi-function controller designed as a battery fuel gauge for single-cell Lithium Ion packs. Built-in fault protection covers overcurrent, over/under voltage, and short-circuit conditions, which means the gauge can serve as the primary safety monitor in the battery pack without a separate protector IC.

The BQ27742YZFT-G1 comes in a 15-bump DSBGA (Wafer-Level Chip Scale Package). The supplier device package is 15-DSBGA, identical to the case code. Available in Tape & Reel (TR) or Cut Tape (CT) for prototyping. For production, the TR option is the usual pick; CT suits small-run or bench builds. No tube or tray option exists for this package.

ROHS3 compliant, no exemption issues for EU markets.

Frequently asked questions

Does BQ27742YZFT-G1 support I2C and HDQ interface?

Yes, the BQ27742YZFT-G1 supports both I²C and HDQ serial interfaces for communication with a host microcontroller.

Is BQ27742YZFT-G1 compatible with 2-cell batteries?

No, the BQ27742YZFT-G1 is designed for single-cell (1-cell) Lithium Ion packs only. For multi-cell applications, consider a different gauge such as the BQ2084 series.