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Texas Instruments TPS65251RHAT — Power Management (PMIC / Gate Driver)

TPS65251RHAT TI Triple Buck Regulator, 3A/2A, 4.5-18V

MPNTPS65251RHAT
Active

Texas Instruments TPS65251RHAT, triple-output synchronous buck regulator, adjustable output, 3A/2A per channel, 300kHz-2.2MHz switching, 4.5V-18V input, -40°C to 125°C, 40-VFQFN (6x6 mm) exposed pad.

$5.5200Ref. price · indicative, final on quote
Packaging40-VFQFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS65251RHAT specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Voltage - input4.5V
Voltage - output18V
Voltage - output (Min (Fixed))0.8V
Output current3A, 2A
Frequency300kHz ~ 2.2MHz
I/O channels3
Operating temperature-40°C ~ 125°C (TJ)
PackageTape & Reel (TR) Cut Tape (CT)
FunctionStep-Down
TopologyBuck
Case40-VFQFN Exposed Pad
Output configurationPositive
Synchronous rectifierYes

Product details

Temperature range and environment

Rated for -40°C to 125°C junction temperature, this part handles the thermal swings you see in outdoor telecom cabinets, engine-bay-adjacent electronics, or factory-floor motor drives. No AEC-Q100 cert in the listing, so if you need automotive-grade qualification for under-hood deployment, that is a separate check — but the temperature range itself is industrial-plus.

Sourcing and lifecycle

Lifecycle status is Active, with ROHS3 compliance confirmed. That means you can qualify it into a new BOM without worrying about a sudden discontinuation mid-production.

Frequently asked questions

Does TPS65251RHAT need external Schottky diodes?

No. It integrates synchronous rectifiers, so the external catch diodes typical of non-synchronous bucks are eliminated. That saves board space and BOM cost.