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Texas Instruments BQ24133RGYT — Power Management (PMIC / Gate Driver)

BQ24133RGYT Li-Ion/Polymer Charger IC, 2.5A, 1-3 Cells

MPNBQ24133RGYT
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Texas Instruments BQ24133RGYT, Li-Ion/Polymer battery charger IC, 2.5A max charge current, 1-3 cells, 17V max supply, -40°C to 85°C, 24-VFQFN Exposed Pad, Surface Mount.

$4.6900Ref. price · indicative, final on quote
Texas Instruments BQ24133RGYT datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ24133RGYT specifications
ParameterValue
MountingSurface Mount
Battery pack voltage4.2V
Supply voltage17V
Current - chargingConstant - Programmable
Charge current - max2.5A
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case24-VFQFN Exposed Pad
Number of cells1 ~ 3
Fault protectionOver Current, Over Temperature, Over Voltage
Battery chemistryLithium Ion/Polymer
Programmable featuresCurrent

Product details

2.5A programmable charger for 1-3 cell Li-Ion packs

The Texas Instruments BQ24133RGYT is a synchronous switch-mode Li-Ion/Polymer battery charger IC supporting 1 to 3 series cells with a programmable charge current up to 2.5A. Input supply range extends to 17V, accommodating a wide variety of wall adapters or USB-PD sources without an external pre-regulator. The constant-current charge profile is programmable via an external resistor, giving the BOM engineer direct control over charge rate vs. thermal budget.

Industrial temperature grade and fault protection

Integrated fault protection covers over-current, over-temperature, and over-voltage conditions, reducing external supervisory circuitry and simplifying safety certification.

Frequently asked questions

Is BQ24133RGYT compatible with 3.7V lithium batteries?

Yes. The BQ24133RGYT charges Li-Ion/Polymer cells with a 4.2V per-cell termination voltage, which is the standard full-charge voltage for 3.7V nominal cells.

What is the difference between BQ24133RGYT and BQ24133RGET?

The BQ24133RGYT and BQ24133RGET share the same base charger design and electrical specifications. The difference is packaging: RGYT is the 24-VFQFN Exposed Pad variant, while RGET is a different package option within the same family. Pin compatibility should be verified against the respective datasheet package drawings.