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Texas Instruments BQ24721RHBR — Power Management (PMIC / Gate Driver)

BQ24721RHBR Multi-Chemistry Battery Charger, I²C, 19.2V Max

MPNBQ24721RHBR
Obsolete

Texas Instruments BQ24721RHBR multi-chemistry battery charger IC, I²C interface, 3-4 cells, 19.2V max pack voltage, overcurrent protection, 32-VQFN (5x5) package, -40°C to 85°C.

$4.0000Ref. price · indicative, final on quote
Texas Instruments BQ24721RHBR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

BQ24721RHBR specifications
ParameterValue
MountingSurface Mount
Battery pack voltage19.2V (Max)
Supply voltage24V
InterfaceI²C
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR)
Case32-VFQFN Exposed Pad
Number of cells3 ~ 4
Fault protectionOver Current
Battery chemistryMulti-Chemistry
Programmable featuresCurrent

Product details

Multi-chemistry charger with I²C control

The Texas Instruments BQ24721RHBR is a multi-chemistry battery charger IC designed for 3 to 4 series cells, with a maximum battery pack voltage of 19.2V. Communication and programming are handled through an I²C interface, allowing the host to set charge current and monitor status. Integrated overcurrent fault protection guards the battery and system during charge cycles.

Obsolete — plan your BOM move

The supply voltage can go up to 24V, covering the input range needed for most notebook and portable equipment battery chargers.

Frequently asked questions

Is BQ24721RHBR obsolete?

Yes, the BQ24721RHBR is listed as Obsolete by Texas Instruments. No further factory orders are accepted.

Does BQ24721RHBR work with 4S battery packs?

Yes, the BQ24721RHBR supports 3 to 4 series cells and a maximum pack voltage of 19.2V, which covers a 4S lithium-ion configuration (nominal 14.8V, full charge ~16.8V).