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Texas Instruments TPS6281120QWRWYRQ1 — Power Management (PMIC / Gate Driver)

TPS6281120QWRWYRQ1 Automotive Buck Converter, 1 A, 9-VFQFN

MPNTPS6281120QWRWYRQ1
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Texas Instruments TPS6281120QWRWYRQ1, Automotive AEC-Q100, Step-Down Buck Regulator, Adjustable Output, 1 A, 2.75 V to 6 V Input, 1.8 MHz to 4 MHz Switching, -40°C to 125°C, 9-VFQFN-HR (3x2) Package.

$2.3200Ref. price · indicative, final on quote
Texas Instruments TPS6281120QWRWYRQ1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS6281120QWRWYRQ1 specifications
ParameterValue
SeriesAutomotive, AEC-Q100
Output typeAdjustable
MountingSurface Mount, Wettable Flank
Voltage - input2.75V
Voltage - output5.5V
Voltage - output (Min (Fixed))0.6V
Output current1A
Frequency - switching1.8MHz ~ 4MHz
I/O channels1
Operating temperature-40°C~125°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Down
TopologyBuck
Case9-VFQFN
Output configurationPositive
Synchronous rectifierYes

Product details

AEC-Q100 buck regulator for 1 A automotive rails

The Texas Instruments TPS6281120QWRWYRQ1 is a synchronous step-down (buck) regulator qualified to AEC-Q100, delivering 1 A continuous output from a 2.75 V to 6 V input rail.

Switching frequency and inductor selection

At 2.2 MHz, a 1 µH inductor and 10 µF output capacitor typically fit the compensation, keeping the total solution footprint under 25 mm². The high-frequency range keeps switching noise above the AM band and allows the use of small, low-profile inductors.

Thermal and package considerations

The 9-VFQFN-HR (3x2 mm) package with wettable flanks supports automated optical inspection (AOI) of the solder joints.

Frequently asked questions

Is TPS6281120QWRWYRQ1 pin-compatible with the base TPS6281120?

The base product number TPS6281120 shares the same pinout and package footprint. The QWRWYRQ1 suffix denotes the AEC-Q100 automotive qualification and the specific reel packaging. For a non-automotive design, the commercial-grade variant is a drop-in replacement; for automotive, the QWRWYRQ1 is the correct choice.