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Texas Instruments BQ24123RHLTG4 — Power Management (PMIC / Gate Driver)
Texas Instruments

BQ24123RHLTG4 Li-Ion Charger IC, 2A, 16V Input, bqSWITCHER

MPNBQ24123RHLTG4
End of Life

Texas Instruments bqSWITCHER™ series, BQ24123RHLTG4, Li-Ion/Polymer battery charger IC, 1-3 cells, 2A max charge current, 16V supply, 20-VFQFN Exposed Pad, -40 to 85°C.

$58.8000Ref. price · indicative, final on quote
BQ24123RHLTG4 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

BQ24123RHLTG4 Technical Specifications
ParameterValue
SeriesbqSWITCHER™
Mounting typeSurface Mount
Battery pack voltage8.4V
Voltage16V
Current - chargingConstant - Programmable
Charge current - max2A
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR)
Case20-VFQFN Exposed Pad
Number of cells1 ~ 3
Fault protectionOver Temperature
Battery chemistryLithium Ion/Polymer
Programmable featuresCurrent, Timer

Product details

Battery charger for 1-3 Li-Ion cells

The Texas Instruments BQ24123RHLTG4 is a bqSWITCHER™ series switch-mode battery charger IC designed for 1 to 3 series Li-Ion or Li-Polymer cells. It delivers a programmable constant-current charge up to 2A maximum, with a battery pack voltage target of 8.4V for the 2-cell configuration. The input supply can go up to 16V, making it compatible with common 5V USB or 12V wall adapters.

Charge current and programmable features

The charge current is constant-current programmable, with a maximum rating of 2A. The IC also provides programmable timer and current features via external components, giving the designer control over charge termination and safety timeout.

Industrial temperature grade and protection

On-chip fault protection includes over-temperature shutdown, which prevents damage if the die exceeds safe limits during a high-current charge cycle in a hot enclosure.

Frequently asked questions

Can BQ24123RHLTG4 charge a 4-cell Li-Ion pack?

No. The IC supports only 1 to 3 series cells. A 4-cell pack (16.8V nominal) exceeds the battery pack voltage rating of 8.4V and the charge algorithm is not designed for that chemistry stack.

What is the difference between BQ24123RHLTG4 and BQ24123RHLTRG4?

The suffix difference indicates packaging and reel quantity. BQ24123RHLTG4 is Tape & Reel (TR) — typically a standard reel quantity. BQ24123RHLTRG4 is also Tape & Reel but may differ in reel size or quantity. The die and electrical specifications are identical.

What is the maximum charge current of BQ24123RHLTG4?

The maximum charge current is 2A, programmable via an external sense resistor or current-set resistor.