Skip to main content
Log in
Texas Instruments TPS54331DDA — Power Management (PMIC / Gate Driver)

TPS54331DDA Texas Instruments Step-Down Regulator, 3 A

MPNTPS54331DDA
Active

Texas Instruments TPS54331DDA, Eco-Mode™ series, step-down buck regulator, 3 A output, 570 kHz switching, adjustable output 0.8 V to 25 V, 8-PowerSOIC package, -40°C to 150°C junction temperature.

$2.1000Ref. price · indicative, final on quote
Texas Instruments TPS54331DDA datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS54331DDA specifications
ParameterValue
SeriesEco-Mode™
Output typeAdjustable
MountingSurface Mount
Voltage - input3.5V
Voltage - output25V
Voltage - output (Min (Fixed))0.8V
Output current3A
Frequency570kHz
I/O channels1
Operating temperature-40°C~150°C(TJ)
PackageTube
FunctionStep-Down
TopologyBuck
Case8-PowerSOIC (0.154\", 3.90mm Width)
Output configurationPositive
Synchronous rectifierNo

Product details

3 A buck regulator with 570 kHz switching and 150°C junction rating

The Texas Instruments TPS54331DDA is a 3 A step-down buck regulator in the Eco-Mode™ series, designed for converting 3.5 V to 28 V input rails down to an adjustable output from 0.8 V to 25 V.

Adjustable output and non-synchronous topology

The output is adjustable via an external resistor divider, with a 0.8 V reference. The non-synchronous rectifier (external Schottky diode required) keeps the BOM simple and avoids the shoot-through risk of a synchronous FET. The 570 kHz switching frequency lets you use a smaller inductor than a 300 kHz design, but the switching losses in the internal FET rise with frequency; the trade-off favours the 570 kHz for most 12 V to 5 V or 3.3 V conversions.

Frequently asked questions

Can TPS54331DDA output 5 V?

Yes. The output is adjustable from 0.8 V to 25 V via an external resistor divider. A 5 V output is a common configuration — the divider ratio sets the feedback voltage to 0.8 V.