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Texas Instruments BQ24751BRHDRG4 — Power Management (PMIC / Gate Driver)
Texas Instruments

BQ24751BRHDRG4 Battery Charger IC, 10A Max, 2-4 Cells

MPNBQ24751BRHDRG4
End of Life

Texas Instruments BQ24751BRHDRG4 multi-chemistry battery charger IC, 2-4 cells, 10A max charge current, constant programmable current, over-current/over-voltage protection, -40°C to 125°C, 28-VQFN (5x5) package, Tape & Reel.

BQ24751BRHDRG4 datasheet
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

BQ24751BRHDRG4 Technical Specifications
ParameterValue
Mounting typeSurface Mount
Battery pack voltage18.048V (Max)
Voltage24V
Current - chargingConstant - Programmable
Charge current - max10A
Operating temperature-40°C~125°C(TJ)
PackageTape & Reel (TR)
Case28-VFQFN Exposed Pad
Number of cells2 ~ 4
Fault protectionOver Current, Over Voltage
Battery chemistryMulti-Chemistry

Product details

10 A charge path — sizing the power stage

The BQ24751BRHDRG4 is a multi-chemistry battery charger IC from Texas Instruments that handles 2 to 4 series cells with a programmable constant-current charge up to 10 A. The 10 A ceiling sets the inductor saturation current and the low-side FET Rds(on) budget — a 10 µH, 12 A-rated inductor and a pair of 30 V, 5 mOhm FETs keep the junction rise under 40°C at full load.

Protection and temperature grade

Built-in over-current and over-voltage fault protection reduces the need for external supervisory circuits — the charger latches off on a fault and requires a POR or enable toggle to restart. The 24 V maximum supply covers the typical 19 V to 20 V adapter rails used in 4-cell Li-ion systems.

Frequently asked questions

What is the maximum charge current setting for BQ24751BRHDRG4?

The maximum charge current is 10 A, programmable via an external sense resistor and the ISET pin. The actual current is set by the resistor value; the 10 A ceiling requires a sense resistor rated for the power dissipation at full load.

Does BQ24751BRHDRG4 support 4.2V Li-ion cells?

Yes, the BQ24751BRHDRG4 supports multi-chemistry cells including 4.2 V Li-ion. The battery pack voltage is regulated to a maximum of 18.048 V, which corresponds to a 4-series stack of 4.2 V cells (4 x 4.2 V = 16.8 V typical, with the 18.048 V ceiling providing headroom for the constant-voltage regulation point).