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Texas Instruments BQ25890RTWT — Power Management (PMIC / Gate Driver)

BQ25890RTWT MaxCharge™ Battery Charger IC, 5 A, 14 V

MPNBQ25890RTWT
Active

Texas Instruments BQ25890RTWT MaxCharge™ single-cell Li-Ion/Polymer battery charger IC, 5 A max charge current, I²C and USB interface, 14 V supply max, 24-WFQFN Exposed Pad package, -40°C to 85°C operating temperature.

$4.8900Ref. price · indicative, final on quote
Texas Instruments BQ25890RTWT datasheet (PDF)
Packaging24-WFQFN Exposed Pad
RoHSROHS3 Compliant
SeriesMaxCharge™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ25890RTWT specifications
ParameterValue
SeriesMaxCharge™
MountingSurface Mount
Supply voltage14V
Charge current - max5A
InterfaceI²C, USB
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case24-WFQFN Exposed Pad
Number of cells1
Fault protectionOver Current, Over Temperature
Battery chemistryLithium Ion/Polymer

Product details

Single-cell Li-Ion/Polymer charger with I²C and USB interface

The Texas Instruments BQ25890RTWT is a MaxCharge™ single-cell Li-Ion/Polymer battery charger IC in a 24-WQFN package. It handles a single cell and delivers up to 5 A charge current from a supply voltage up to 14 V.

5 A charge current — thermal and layout considerations

The 5 A max charge current is the headline rating that drives the charging speed. The I²C interface allows the host to program the charge current, termination voltage, and input current limit, so the same PCB can support different battery chemistries and capacities without a hardware change.

Fault protection and interface

Built-in over-current and over-temperature protection reduce the need for external supervisory circuits. The USB interface supports direct connection to a USB VBUS line; the I²C bus gives the system controller visibility into charge status, fault flags, and battery voltage.

The base product number BQ25890 covers the family; the RTWT suffix identifies the 24-WQFN package and tape-and-reel delivery.

Frequently asked questions

What is the maximum charge current of BQ25890RTWT?

The maximum charge current is 5 A. This is the peak rating; the actual charge current is programmable via I²C and should be set based on the battery capacity and thermal budget of the design.

Does BQ25890RTWT support I²C communication?

Yes, the BQ25890RTWT has an I²C interface for programming charge parameters and reading status registers. It also supports USB input detection.

What is the alternative to BQ25890RTWT?

Within the same MaxCharge™ family, the BQ25890 is the base product number; the RTWT suffix denotes the 24-WQFN package and tape-and-reel format. Pin-compatible siblings with different charge current or feature sets may exist — verify the specific variant against your BOM requirements.