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Texas Instruments BQ24745RHDR — Power Management (PMIC / Gate Driver)
Texas Instruments

BQ24745RHDR Battery Charger IC, 19.2V Max, 8.064A, I²C, NRND

MPNBQ24745RHDR
NRND

Texas Instruments BQ24745RHDR multi-chemistry battery charger IC, I²C interface, 2-4 cells, 19.2V max battery pack voltage, 8.064A max charge current, 28-VFQFN exposed pad, -40°C to 125°C junction temperature.

$4.6230Ref. price · indicative, final on quote
BQ24745RHDR 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

BQ24745RHDR Technical Specifications
ParameterValue
Mounting typeSurface Mount
Battery pack voltage19.2V (Max)
Voltage24V
Current - chargingConstant - Programmable
Charge current - max8.064A
InterfaceI²C
Operating temperature-40°C~125°C(TJ)
PackageTape & Reel (TR)
Case28-VFQFN Exposed Pad
Number of cells2 ~ 4
Fault protectionOver Voltage
Battery chemistryMulti-Chemistry

Product details

The BQ24745RHDR is a multi-chemistry battery charger IC from Texas Instruments, controlling charge current and voltage via an I²C bus. It handles 2 to 4 series cells with a maximum battery pack voltage of 19.2V and a programmable charge current up to 8.064A. The 8.064A ceiling supports fast charging of medium-capacity Li-ion packs — a 4-cell, 4.4 Ah pack charges at roughly 1.8C. The I²C interface lets the system microcontroller adjust the charge current and voltage dynamically, enabling temperature-compensated or low-power charging profiles.

125°C junction — industrial and motor-drive environments

That includes motor drives, outdoor telecom rectifiers, and factory-automation battery-backed systems.

The BQ24745RHDR carries a Not Recommended for New Designs (NRND) status. It remains available for existing production runs, but TI advises against starting new designs with this order code. For a new-design BOM, evaluate the current-generation TI battery charger family with I²C control and similar cell-count support.

Frequently asked questions

What is the product status of BQ24745RHDR?

The BQ24745RHDR is listed as Not Recommended for New Designs (NRND). It is not fully obsolete, but TI recommends against using it in new product designs. Existing production can continue sourcing it through independent distribution.

Does BQ24745RHDR support 2-cell batteries?

Yes, the BQ24745RHDR supports 2 to 4 series cells. The battery pack voltage is programmable up to 19.2V max, which covers 2-cell (8.4V nominal) through 4-cell (16.8V nominal) Li-ion packs.

What is the recommended replacement for BQ24745RHDR?

For new designs, evaluate TI's current-generation I²C-controlled multi-cell battery charger ICs with similar cell-count and current capability.

What is the BQ24745RHDR's interface and package?

The BQ24745RHDR uses an I²C interface for charge parameter programming and telemetry. It is housed in a 28-VFQFN exposed pad package (supplier device package 28-VQFN 5x5 mm), surface-mount only.