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Texas Instruments TPS621361RGXR — Power Management (PMIC / Gate Driver)

TPS621361RGXR – TI Buck Regulator, 4A, 1 MHz, Active

MPNTPS621361RGXR
Active

Texas Instruments TPS621361RGXR, step-down buck regulator, 4 A output, 1 MHz switching, adjustable output from 0.8 V to 12 V, 3 V to 17 V input, synchronous rectification, 11-VQFN-HR (2x3 mm) package, -40°C to 125°C junction temperature.

$2.0100Ref. price · indicative, final on quote
Texas Instruments TPS621361RGXR datasheet (PDF)
Packaging11-VFQFN
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS621361RGXR specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Voltage - input17V
Voltage - output12V
Voltage - output (Min (Fixed))0.8V
Output current4A
Frequency - switching1MHz
I/O channels1
Operating temperature-40°C~125°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Down
TopologyBuck
Case11-VFQFN
Output configurationPositive
Synchronous rectifierYes

Product details

4 A, 1 MHz buck in a 2x3 mm QFN

The TPS621361RGXR is a 4 A continuous-output, synchronous step-down buck regulator from Texas Instruments, switching at 1 MHz. The 11-VQFN-HR package (2x3 mm) keeps the footprint small for space-constrained power rails. Input range spans 3 V to 17 V, output is adjustable from 0.8 V up to 12 V. The integrated synchronous rectifier improves efficiency at low output voltages.

Surface-mount mounting, tape-and-reel or cut-tape delivery.

ROHS3 compliant. Sourced per RFQ against BOM quantity; no stock-holding claim.

Frequently asked questions

Will TPS621361RGXR drop into a panel specified around LMR33630APCQRNXRQ1 without rewiring?

No — the LMR33630APCQRNXRQ1 is a 3 A, 2.1 MHz automotive-grade buck in a different pinout and package (wettable-flank QFN). The TPS621361RGXR is a 4 A, 1 MHz part with a different switching frequency and package footprint; a direct drop-in replacement would require PCB layout changes.