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Texas Instruments TPS5450MDDAREP — Power Management (PMIC / Gate Driver)

TPS5450MDDAREP – Texas Instruments SWIFT Buck Regulator, 5A

MPNTPS5450MDDAREP
Active

Texas Instruments SWIFT™ TPS5450MDDAREP, Automotive-grade AEC-Q100, 5A step-down (buck) regulator, adjustable output from 1.221V to 32.04V, 500kHz switching, 8-PowerSOIC package, -55°C to 125°C junction temperature range.

$10.5600Ref. price · indicative, final on quote
Texas Instruments TPS5450MDDAREP datasheet (PDF)
Packaging8-PowerSOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
SeriesSWIFT™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS5450MDDAREP specifications
ParameterValue
SeriesSWIFT™
Output typeAdjustable
MountingSurface Mount
Voltage - input5.5V
Voltage - output32.04V
Voltage - output (Min (Fixed))1.221V
Output current5A
Frequency500kHz
I/O channels1
Operating temperature-55°C ~ 125°C (TJ)
GradeAutomotive
PackageTape & Reel (TR) Cut Tape (CT)
FunctionStep-Down
TopologyBuck
QualificationAEC-Q100
Case8-PowerSOIC (0.154\", 3.90mm Width)
Output configurationPositive
Synchronous rectifierNo

Product details

5A non-synchronous buck for 24V automotive rails

It accepts an input from 5.5V to 36V and delivers an adjustable output from 1.221V up to 32.04V at a fixed 500 kHz switching frequency. The non-synchronous topology (no internal synchronous rectifier) requires an external Schottky catch diode. The 500 kHz fixed frequency lets the designer size the inductor and output capacitor for a predictable ripple, and the 36V max input gives headroom for 24V battery systems with load-dump transients.

AEC-Q100 grade and full temperature range

The 8-PowerSOIC package with exposed PowerPad (8-SO PowerPad) helps pull heat into the PCB copper plane.

For volume quoting, the part is sourced to order against BOM quantities. The laser etch on the package should match the Texas Instruments logo, date-code format, and the marking layout defined in the package drawing — any deviation in font or alignment is a red flag for gray-market material.

Frequently asked questions

Is TPS5450MDDAREP RoHS compliant and lead-free?

Yes, it is ROHS3 compliant. The ROHS3 status covers all six original substances plus the four phthalates. No lead-free exemption applies to this device.

What is the maximum output current of TPS5450MDDAREP?

The rated continuous output current is 5A. Because this is a non-synchronous buck, the external Schottky diode must be sized to carry the inductor current during the off-time — a 5A-rated Schottky with adequate thermal margin is recommended.

Is TPS5450MDDAREP a direct replacement for the base TPS5450?

The base product number is TPS5450. The MDDAREP suffix indicates the automotive-qualified (AEC-Q100) variant in the PowerSOIC package, tape-and-reel. The electrical specifications (5A, 36V, 500kHz, adjustable output) are the same as the commercial-grade TPS5450. Pin-compatibility depends on the package — verify the 8-PowerSOIC footprint matches your layout.