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Texas Instruments BQ24721CRHBT — Power Management (PMIC / Gate Driver)
Texas Instruments

BQ24721CRHBT battery charger IC, I²C, 3-4 cell, 32-VQFN

MPNBQ24721CRHBT
Active

Texas Instruments BQ24721CRHBT, Multi-Chemistry Battery Charger IC, I²C Interface, 3 ~ 4 Cells, 19.2V Max Battery Pack Voltage, 32-VFQFN Exposed Pad, Tape & Reel.

$11.4682Ref. price · indicative, final on quote
BQ24721CRHBT 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

BQ24721CRHBT Technical Specifications
ParameterValue
Mounting typeSurface Mount
Battery pack voltage19.2V (Max)
Voltage24V
InterfaceI²C
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR)
Case32-VFQFN Exposed Pad
Number of cells3 ~ 4
Fault protectionOver Current
Battery chemistryMulti-Chemistry
Programmable featuresCurrent

Product details

Multi-chemistry charger with digital current control

The Texas Instruments BQ24721CRHBT is a multi-chemistry battery charger IC designed for 3- to 4-cell series packs, with a maximum battery pack voltage of 19.2V. It integrates an I²C interface for host-controlled charge current programming, eliminating external resistor dividers and enabling adaptive charging profiles for Li-ion, Li-polymer, or other chemistries.

Supply rail and pack voltage limits

Maximum supply voltage is 24V, which accommodates common AC adapter outputs (19V–20V) with margin for transient events. The 19.2V max battery pack voltage matches a 4-series Li-ion cell stack at full charge (4.2V/cell × 4 = 16.8V) plus a small overhead for the charger's regulation setpoint. With 3-4 cell support, this part fits the majority of notebook and portable instrument battery configurations. The I²C interface allows the system host to read back charge status and adjust current in real time, useful for thermal throttling or input-current limiting when the adapter is shared.

Package and procurement posture

Supplied in Tape & Reel (TR) for automated assembly, in a 32-VFQFN Exposed Pad package (32-VQFN 5x5 mm). Lifecycle status is Active — no end-of-life notice or last-time-buy risk.

Frequently asked questions

What battery chemistries does BQ24721CRHBT support?

The device is specified for multi-chemistry operation, covering Li-ion, Li-polymer, and other common rechargeable chemistries. The I²C interface lets the host tailor the charge algorithm to the specific cell type.

Is BQ24721CRHBT compatible with Li-ion batteries?

Yes, the multi-chemistry support includes Li-ion and Li-polymer. The 19.2V max pack voltage covers a 4-series Li-ion stack at full charge (16.8V) with margin.