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Texas Instruments TPS54308DDCR — DC-DC Power Modules

TPS54308DDCR Buck Converter, 3 A, 350 kHz, SOT-23-6

MPNTPS54308DDCR
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Texas Instruments TPS54308DDCR, step-down (buck) switching regulator, 3 A output, adjustable output, 4.5 V to 28 V input range, 350 kHz switching frequency, synchronous rectification, SOT-23-6 Thin package, -40°C to 125°C.

$1.7100Ref. price · indicative, final on quote
Texas Instruments TPS54308DDCR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS54308DDCR specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Voltage - input4.5V
Voltage - output26V
Voltage - output (Min (Fixed))1V
Output current3A
Frequency350kHz
I/O channels1
Operating temperature-40°C~125°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Down
TopologyBuck
CaseSOT-23-6 Thin, TSOT-23-6
Output configurationPositive
Synchronous rectifierYes

Product details

3 A buck regulator in a SOT-23-6 footprint

The adjustable output voltage can be set from 1 V up to 26 V, covering common 1.8 V, 3.3 V, 5 V, and 12 V system rails.

Switching frequency and inductor sizing

The 350 kHz switching frequency is a practical middle ground. At this frequency, output ripple is manageable with a standard ceramic output capacitor; the designer does not need a high-ESR electrolytic for stability.

The SOT-23-6 Thin package has a small footprint (roughly 2.9 mm × 2.8 mm), but the thermal resistance is higher than a larger package like SOIC-8.

Frequently asked questions

Is TPS54308DDCR compatible with TPS54308?

Yes, the TPS54308DDCR shares the same base product number TPS54308. The suffix DDCR indicates the specific package and reel configuration (SOT-23-6 Thin on Tape & Reel). The electrical specifications — 3 A output, 4.5 V to 28 V input, 350 kHz switching — are identical across the TPS54308 family. The DDCR variant is the standard reel-packaged version for automated assembly.