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Texas Instruments BQ25708RSNR — Power Management (PMIC / Gate Driver)

BQ25708RSNR TI Buck-Boost Battery Charger, 8.128A, 24V

MPNBQ25708RSNR
Active

Texas Instruments BQ25708RSNR multi-chemistry buck-boost battery charger, SMBus interface, 8.128A max charge current, 24V supply max, 32-WFQFN exposed pad.

$2.9100Ref. price · indicative, final on quote
Texas Instruments BQ25708RSNR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ25708RSNR specifications
ParameterValue
MountingSurface Mount
Battery pack voltage19.2V (Max)
Supply voltage24V
Current - chargingConstant
Charge current - max8.128A
InterfaceSMBus
Operating temperature-40°C~155°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
Case32-WFQFN Exposed Pad
Number of cells1 ~ 4
Fault protectionOver Temperature, Over Voltage, Short Circuit
Battery chemistryMulti-Chemistry

Product details

32-QFN footprint and thermal pad

The BQ25708RSNR comes in a 32-WFQFN Exposed Pad package, supplier device package 32-QFN (4x4 mm).

Charging envelope and host control

This is a multi-chemistry buck-boost charger handling 1 to 4 cells with a maximum battery pack voltage of 19.2 V. The constant-current charge can reach 8.128 A max, fed from a supply rail up to 24 V. The SMBus interface lets the system host set charge current, voltage thresholds, and termination — the charger does not run autonomously; the firmware stack owns the charging profile.

Frequently asked questions

What is the maximum charge current for BQ25708RSNR?

The maximum charge current is 8.128 A, constant-current mode, with a maximum battery pack voltage of 19.2 V and a supply voltage up to 24 V.

What package does BQ25708RSNR come in?

The device is supplied in a 32-WFQFN Exposed Pad package, also designated as 32-QFN (4x4 mm). The exposed pad requires a thermal via pattern on the PCB for heat sinking.