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Texas Instruments BQ24155RGYR — Power Management (PMIC / Gate Driver)
Texas Instruments

BQ24155RGYR I²C Li-Ion Charger, 1.25 A, 14-VQFN

MPNBQ24155RGYR
Active

Texas Instruments BQ24155RGYR single-cell Li-Ion/Polymer battery charger, I²C programmable, 1.25 A max charge current, 6 V max input, 14-VQFN (3.5x3.5) package, -40°C to 85°C.

$1.4500Ref. price · indicative, final on quote
BQ24155RGYR 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

BQ24155RGYR Technical Specifications
ParameterValue
Mounting typeSurface Mount
Battery pack voltage4.44V (Max)
Voltage6V
Current - chargingConstant - Programmable
Charge current - max1.25A
InterfaceI²C
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case14-VFQFN Exposed Pad
Number of cells1
Fault protectionOver Temperature, Over Voltage
Battery chemistryLithium Ion/Polymer
Programmable featuresCurrent, Timer, Voltage

Product details

Single-cell Li-Ion charger with I²C programmability

The Texas Instruments BQ24155RGYR is a single-cell Li-Ion or Li-Polymer battery charger with an I²C interface for programming charge current, voltage, and timer parameters. It targets portable devices, handheld instruments, and battery-backed systems where the charge profile must be adjusted in firmware rather than by resistor dividers.

1.25 A charge current in a 3.5x3.5 mm QFN

The maximum charge current is 1.25 A, programmable via I²C. Input supply maximum is 6 V. Over-voltage and over-temperature fault protection is built in.

No last-time-buy or end-of-life notification has been issued.

The battery pack voltage ceiling is 4.44 V.

Frequently asked questions

Can BQ24155RGYR charge a 1S LiPo battery?

Yes, it is designed for single-cell (1S) Li-Ion and Li-Polymer batteries. The battery pack voltage maximum is 4.44 V, which covers the standard 4.2 V termination voltage.

How do I program the charge current on BQ24155RGYR?

The charge current is programmed via the I²C interface. The device supports constant-current charging with programmable current, voltage, and timer settings through the I²C bus.