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Texas Instruments BQ24103RHLR — Power Management (PMIC / Gate Driver)

BQ24103RHLR TI bqSWITCHER™ Li-Ion Charger IC, 2A, 20-VQFN

MPNBQ24103RHLR
Active

Texas Instruments bqSWITCHER™ series, BQ24103RHLR Li-Ion/Li-Polymer battery charger IC, 1-2 cells, 2A max charge current, 8.4V pack voltage, 20-VFQFN Exposed Pad package, active production.

$5.7000Ref. price · indicative, final on quote
Texas Instruments BQ24103RHLR datasheet (PDF)
Packaging20-VFQFN Exposed Pad
RoHSROHS3 Compliant
SeriesbqSWITCHER™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ24103RHLR specifications
ParameterValue
SeriesbqSWITCHER™
MountingSurface Mount
Battery pack voltage8.4V
Supply voltage16V
Current - chargingConstant - Programmable
Charge current - max2A
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case20-VFQFN Exposed Pad
Number of cells1 ~ 2
Fault protectionOver Temperature, Over Voltage
Battery chemistryLithium Ion/Polymer
Programmable featuresCurrent, Timer

Product details

2A programmable charger for 1-2 cell Li-ion packs

The BQ24103RHLR is a constant-current, programmable Li-Ion/Polymer charger IC from TI's bqSWITCHER™ series. It handles 1 to 2 series cells with a maximum charge current of 2A and a battery pack voltage of 8.4V — the termination voltage for a 2S Li-ion stack. Fault protection includes over-temperature and over-voltage shutdown, and the charge current and timer are programmable via external components. The 16V maximum supply voltage covers common 5V USB and 12V wall-adapter inputs.

Temperature grade and package details

The 20-VFQFN Exposed Pad package (20-VQFN, 3.5x4.5 mm body) requires a thermal land on the PCB for heat dissipation.

No official second-source or cross-reference is listed, but the bqSWITCHER family includes functionally similar chargers with different cell counts or current ratings.

Frequently asked questions

Is BQ24103RHLR compatible with 2-cell Li-Polymer batteries?

Yes. The battery pack voltage is 8.4V, which is the standard termination voltage for two Li-ion or Li-Polymer cells in series. The charger supports 1 to 2 cells, so a 2S pack is within the specified range.

What is the difference between BQ24103RHLR and the base BQ24103?

The BQ24103 is the base product number for the die. The RHLR suffix specifies the 20-VQFN (3.5x4.5 mm) package and reel packaging. The silicon is identical; the difference is only in package and delivery form.

Can BQ24103RHLR charge a single 3.7V cell?

Yes, the charger supports 1 to 2 cells. For a single 3.7V Li-ion cell, the termination voltage is typically 4.2V, which is within the charger's programmable range. The battery pack voltage of 8.4V is the maximum for 2 cells; for a single cell the regulation voltage is set lower via the external resistor divider.