Skip to main content
Log in
Texas Instruments BQ24721CRHBR — Power Management (PMIC / Gate Driver)

BQ24721CRHBR Texas Instruments Battery Charger IC, 3-4 Cells

MPNBQ24721CRHBR
Active

Texas Instruments BQ24721CRHBR multi-chemistry battery charger IC, 3-4 cells, I2C interface, 19.2V max pack voltage, 32-VFQFN Exposed Pad, -40°C to 85°C.

$12.6100Ref. price · indicative, final on quote
Texas Instruments BQ24721CRHBR datasheet (PDF)
Packaging32-VFQFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ24721CRHBR specifications
ParameterValue
MountingSurface Mount
Battery pack voltage19.2V (Max)
Voltage24V
InterfaceI2C
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR) Cut Tape (CT)
Case32-VFQFN Exposed Pad
Number of cells3 ~ 4
Fault protectionOver Current
Battery chemistryMulti-Chemistry
Programmable featuresCurrent

Product details

Active production — fit for a 3- or 4-cell battery BOM

The Texas Instruments BQ24721CRHBR is an active-production multi-chemistry battery charger IC supporting 3 to 4 series cells with a maximum pack voltage of 19.2 V. The I2C interface lets the host controller set the charge current and monitor status, while the integrated overcurrent protection guards the pack and the charging path.

Supply rail and package — 24 V max input in a 5x5 mm QFN

Surface-mount assembly with standard reflow profiles works; the exposed pad demands a solder-paste stencil aperture that covers at least 50% of the pad area for reliable void-free solder joint.

Temperature grade and chemistry flexibility

The multi-chemistry support means it can charge Li-ion, Li-polymer, or LiFePO4 stacks — the host firmware selects the termination voltage and charge algorithm via the I2C bus. Programmable current allows the same charger design to serve different battery capacities without a resistor change.

Frequently asked questions

Can BQ24721CRHBR charge a 4-cell Li-ion battery pack?

Yes, the BQ24721CRHBR supports 3 to 4 series cells with a maximum pack voltage of 19.2 V, which covers a standard 4-cell Li-ion stack (nominal 14.8 V, full charge 16.8 V) with headroom. The multi-chemistry capability also handles Li-polymer and LiFePO4 packs within the same cell count.

How can I order the BQ24721CRHBR and get a price?

The BQ24721CRHBR is sourced to order through independent distribution. Submit a request with your target quantity and delivery window for a firm quote.