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Texas Instruments BQ24108RHLRG4 — Power Management (PMIC / Gate Driver)
Texas Instruments

BQ24108RHLRG4 bqSWITCHER Li-Ion Charger, 2A, 16V Input

MPNBQ24108RHLRG4
End of Life

Texas Instruments bqSWITCHER™ BQ24108RHLRG4, single-cell Lithium Ion/Polymer battery charger IC, 2A max charge current, 16V supply max, constant-current programmable, over-voltage and over-temperature protection, -40°C to 85°C operating temperature, 20-VFQFN Exposed Pad package, Tape & Reel.

BQ24108RHLRG4 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

BQ24108RHLRG4 Technical Specifications
ParameterValue
SeriesbqSWITCHER™
Mounting typeSurface Mount
Battery pack voltage4.2V
Voltage16V
Current - chargingConstant - Programmable
Charge current - max2A
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR)
Case20-VFQFN Exposed Pad
Number of cells1
Fault protectionOver Temperature, Over Voltage
Battery chemistryLithium Ion/Polymer
Programmable featuresCurrent, Timer

Product details

Single-cell Li-Ion charger with 2A programmable current

The Texas Instruments BQ24108RHLRG4 is a bqSWITCHER™ series single-cell Lithium Ion/Polymer battery charger IC. The input supply range extends to 16V, so it can run from a 5V USB port, a 12V wall adapter, or an unregulated 15V rail without needing an external pre-regulator. The programmable features include charge current and a safety timer, giving the designer control over charge profile and termination.

2A charge current and thermal design in a 20-VFQFN

The 2A maximum charge current is the headline rating for this part. The exposed pad is the primary heat path — the PCB copper area directly under it sets the effective thermal resistance. Built-in over-voltage and over-temperature protection reduce external component count.

Frequently asked questions

What is the BQ24108RHLRG4 charging current?

The maximum charge current is 2A, programmable via an external resistor. The charger operates as a constant-current source until the battery reaches 4.2V, then transitions to constant-voltage regulation.

Does BQ24108RHLRG4 have over-voltage protection?

Yes, it includes both over-voltage and over-temperature fault protection as built-in features, reducing the need for external supervisory components.

Is BQ24108RHLRG4 compatible with 4.2V battery packs?

Yes, the battery pack voltage is 4.2V, which is the standard termination voltage for single-cell Li-Ion and Li-Polymer cells.