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Texas Instruments TPS62172DSGT — Power Management (PMIC / Gate Driver)

TPS62172DSGT Buck Converter, 3.3V Fixed Output, 500 mA

MPNTPS62172DSGT
Active

Texas Instruments DCS-Control™, Step-Down Buck Converter, Fixed 3.3V Output, 500 mA, 2.25 MHz Switching, 8-WFDFN Exposed Pad / 8-WSON (2x2), -40°C to 85°C.

$1.6800Ref. price · indicative, final on quote
Texas Instruments TPS62172DSGT datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS62172DSGT specifications
ParameterValue
SeriesDCS-Control™
Output typeFixed
MountingSurface Mount
Voltage - input17V
Voltage - output (Min (Fixed))3.3V
Output current500mA
Frequency - switching2.25MHz
I/O channels1
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Down
TopologyBuck
Case8-WFDFN Exposed Pad
Output configurationPositive
Synchronous rectifierYes

Product details

Fixed 3.3V rail in a 2x2 mm footprint

The TPS62172DSGT is a fixed 3.3V output step-down buck converter from TI's DCS-Control™ family, delivering 500 mA continuous from a 3V to 17V input. The 2.25 MHz switching frequency lets you use small 1 µH inductors and 10 µF ceramic output caps, keeping the total solution area under 20 mm² including passives. The 8-WSON (2x2) package with exposed pad pulls heat into the PCB copper — no airflow required at 500 mA load.

2.25 MHz switching — inductor and cap sizing

At 2.25 MHz the ripple current is low enough that a 1 µH inductor and a 10 µF output capacitor deliver under 30 mV p-p ripple at full load. The DCS-Control™ architecture keeps the loop stable with ceramic output caps — no ESR trick needed.

TI lists the TPS62172DSGT as Active.

Frequently asked questions

What is the difference between TPS62172DSGT and TPS62173DSGT?

The TPS62173DSGT is the 5V fixed-output sibling; the TPS62172DSGT is fixed at 3.3V. Both share the same 500 mA rating, 2.25 MHz switching, 8-WSON package, and DCS-Control™ topology. The only parametric difference is the output voltage set point.

Is TPS62172DSGT compatible with 5V input?

Yes. The input range is 3V to 17V, so a 5V rail is well within the operating window. The fixed 3.3V output will regulate cleanly from 5V with the same external component values.