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Texas Instruments BQ24730RGFR — Power Management (PMIC / Gate Driver)
Texas Instruments

Texas Instruments BQ24730RGFR Battery Charger IC, 3-4 Cell

MPNBQ24730RGFR
Obsolete

Texas Instruments BQ24730RGFR multi-chemistry battery charger IC, 3-4 cells, 16.8V pack voltage, programmable charge current, fault protection, industrial temp -40°C to 85°C, 40-VFQFN (7x5 mm).

$3.8700Ref. price · indicative, final on quote
BQ24730RGFR 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.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

BQ24730RGFR Technical Specifications
ParameterValue
Mounting typeSurface Mount
Battery pack voltage16.8V
Voltage24V
Current - chargingConstant - Programmable
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case40-VFQFN Exposed Pad
Number of cells3 ~ 4
Fault protectionOver Current, Reverse Battery
Battery chemistryMulti-Chemistry
Programmable featuresCurrent

Product details

The BQ24730RGFR carries an Obsolete lifecycle status — Texas Instruments no longer manufactures this part.

3-4 cell multi-chemistry charger — what the ratings mean

The BQ24730RGFR is a multi-chemistry battery charger IC from Texas Instruments, designed for 3-4 series cells with a battery pack voltage of 16.8V — the standard ceiling for a 4-cell Li-ion stack. Charge current is constant and programmable via an external resistor, giving the designer control over the charge profile without firmware overhead. Maximum supply voltage is 24V, which accommodates common 19V laptop adapters and 24V industrial rails. Fault protection covers overcurrent and reverse battery conditions — a safety net that eliminates external comparators or fuses on the pack input.

Industrial temperature grade and QFN footprint

The 40-VFQFN with exposed pad (7x5 mm) requires a thermal pad on the PCB for heat sinking — the copper area under the pad sets the junction-to-ambient thermal resistance. Surface-mount assembly; the exposed pad also serves as the ground return for the power stage.

Frequently asked questions

Is the BQ24730RGFR compatible with 4-cell lithium batteries?

Yes — the part supports 3 to 4 cells with a battery pack voltage of 16.8V, which is the nominal full-charge voltage for a 4-cell Li-ion or Li-polymer stack. The multi-chemistry charging engine also handles LiFePO4 and other chemistries with the appropriate cell-count programming.