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Texas Instruments BQ24725ARGRR — Power Management (PMIC / Gate Driver)

BQ24725ARGRR Li-Ion Battery Charger IC, 1-4 Cells, I²C

MPNBQ24725ARGRR
Active

Texas Instruments BQ24725ARGRR, Li-Ion battery charger IC, 1-4 cells, I²C interface, 19.2V max pack voltage, 24V max supply, 20-VFQFN Exposed Pad package.

$4.4200Ref. price · indicative, final on quote
Texas Instruments BQ24725ARGRR datasheet (PDF)
Packaging20-VFQFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ24725ARGRR specifications
ParameterValue
MountingSurface Mount
Battery pack voltage19.2V (Max)
Supply voltage24V
Current - chargingConstant - Programmable
InterfaceI²C
Operating temperature0°C~125°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
Case20-VFQFN Exposed Pad
Number of cells1 ~ 4
Fault protectionOver Current, Over Voltage, Short Circuit
Battery chemistryLithium Ion

Product details

The Texas Instruments BQ24725ARGRR is a Li-Ion battery charger controller for 1 to 4 series cells, communicating over an I²C bus for charge parameter programming. It integrates over-current, over-voltage, and short-circuit protection, reducing external monitoring circuitry. The part targets portable electronics, notebooks, and industrial handhelds where the host microcontroller manages the charge profile via the SMBus/I²C interface.

The pad needs a via array to the ground plane for thermal relief — without it, the junction temperature climbs fast at higher charge currents. Clean the pad, apply fresh solder paste, and reflow. The orientation mark is at pin 1 (A1 corner), visible under magnification.

Supply voltage and cell-count flexibility

The charger accepts a maximum supply of 24 V and handles battery packs up to 19.2 V, covering 1S through 4S Li-Ion configurations.

Frequently asked questions

Is BQ24725ARGRR compatible with 3-cell lithium batteries?

Yes. The BQ24725ARGRR supports 1 to 4 series cells, and the 19.2 V maximum pack voltage covers a 3-cell Li-Ion pack (full charge ~12.6 V) with margin.

What is the charge current of BQ24725ARGRR?

The charge current is constant and programmable via the I²C interface. The exact current range depends on the external sense resistor and the programmed register value; the datasheet provides the calculation formula.