Skip to main content
Log in
Texas Instruments BQ27542DRZT-G1 — Power Management (PMIC / Gate Driver)

BQ27542DRZT-G1 Impedance Track Battery Monitor, I²C/HDQ

MPNBQ27542DRZT-G1
Active

Texas Instruments Impedance Track™ BQ27542DRZT-G1, Battery Monitor, single-cell Li-Ion, HDQ/I²C interface, 12-VFDFN Exposed Pad (12-SON 2.5x4), -40°C to 85°C, Surface Mount.

$5.0600Ref. price · indicative, final on quote
Packaging12-VFDFN Exposed Pad
RoHSROHS3 Compliant
SeriesImpedance Track™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ27542DRZT-G1 specifications
ParameterValue
SeriesImpedance Track™
MountingSurface Mount
InterfaceHDQ, I²C
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

Single-cell fuel gauge with learning algorithm

Interface and temperature grade

Two digital interfaces are available: HDQ (a single-wire TI-proprietary protocol) and standard I²C, giving the system designer flexibility in host MCU selection and bus topology. The operating temperature range of -40°C to 85°C (TA) covers industrial and outdoor portable equipment but stops short of automotive under-hood requirements — for that, the BQ79612PAPRQ1 carries a -40°C to 125°C range and AEC-Q100 qualification.

Frequently asked questions

What is the replacement or equivalent for BQ27542DRZT-G1?

There is no direct pin-compatible replacement. The BQ79612PAPRQ1 is a functional alternative with automotive grade and wider temperature range (-40°C to 125°C), but it uses SPI/UART instead of HDQ/I²C and comes in a different package. Evaluate the interface and footprint before substituting.

Is BQ27542DRZT-G1 compatible with single-cell Li-ion?

Yes, it is designed for single-cell Lithium-Ion packs only. It supports Impedance Track™ gauging for one series cell.