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Texas Instruments BQ24259RGER — Power Management (PMIC / Gate Driver)

BQ24259RGER Battery Charger IC, 2A Li-Ion, I2C/USB, 24-VQFN

MPNBQ24259RGER
Active

Texas Instruments BQ24259RGER, single-cell Li-Ion/Polymer battery charger IC, 2A max charge current, I²C and USB interface, 24-VFQFN Exposed Pad package, -40 to 85°C operating temperature.

$2.5300Ref. price · indicative, final on quote
Texas Instruments BQ24259RGER datasheet (PDF)
Packaging24-VFQFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ24259RGER specifications
ParameterValue
MountingSurface Mount
Battery pack voltage4.2V
Voltage6.2V
Current - chargingConstant - Programmable
Charge current - max2A
InterfaceI²C, USB
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case24-VFQFN Exposed Pad
Number of cells1
Fault protectionOver Current, Over Temperature, Over Voltage
Battery chemistryLithium Ion/Polymer

Product details

It handles a maximum charge current of 2A, programmable via the I²C interface, and integrates USB input detection for portable and embedded designs. The device includes over-current, over-temperature, and over-voltage fault protection, reducing the external component count for a safe charging path.

Industrial temperature range and fault protection

The integrated over-voltage, over-current, and over-temperature protection means the charger can survive a faulty adapter or a shorted cell without external clamp diodes or fuses in many designs.

ROHS3 compliant.

Frequently asked questions

Can BQ24259RGER charge 2-cell lithium batteries?

No. The BQ24259RGER is designed for single-cell (1S) Li-Ion or Li-Polymer packs with a 4.2V termination voltage. It does not support 2-cell (2S) configurations.

Is BQ24259RGER compatible with USB Type-C?

The I²C and USB interface supports USB BC1.2 detection. For USB Type-C applications, an external CC-logic controller is typically needed to negotiate the power contract; the BQ24259RGER then charges at the negotiated current.