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Texas Instruments TPS7A2028PDQNRM3 — Analog & Data Acquisition

TPS7A2028PDQNRM3 LDO Regulator, 2.8V Fixed, 300mA, 4-X2SON

MPNTPS7A2028PDQNRM3
End of Life

Texas Instruments TPS7A2028PDQNRM3, ultra-low-noise LDO, fixed 2.8V output, 300mA, 15µA quiescent current, 0.14V dropout at 300mA, PSRR 65dB–40dB (100Hz–1MHz), 4-X2SON (1x1) package, -40°C to 125°C junction temperature.

$0.49Ref. price · indicative, final on quote
Texas Instruments TPS7A2028PDQNRM3 datasheet (PDF)
Packaging4-XDFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS7A2028PDQNRM3 specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input6V
Voltage dropout0.14V @ 300mA
Voltage - output (Min (Fixed))2.8V
Output current300mA
Current - quiescent15 µA
Operating temperature-40°C ~ 125°C (TJ)
PSRR65dB ~ 40dB (100Hz ~ 1MHz)
PackageTape & Reel (TR); Cut Tape (CT)
Case4-XDFN Exposed Pad
Control featuresCurrent Limit, Enable, Soft Start
Protection featuresOver Current, Over Temperature, Under Voltage Lockout (UVLO)
Number of regulators1
Output configurationPositive

Product details

PSRR profile and noise rejection

PSRR is specified at 65 dB at 100 Hz, rolling off to 40 dB at 1 MHz.

Built-in over-current, over-temperature, and under-voltage lockout (UVLO) protect the load and the regulator. An enable pin allows external on/off control; a soft-start circuit limits inrush current during power-up. The current limit is foldback-type — it reduces output current under short-circuit conditions rather than latching off.

Temperature grade and operating range

That covers automotive under-hood, industrial enclosures near motors, and outdoor telecom gear. Input voltage range goes up to 6V, so it can run off a 5V rail or a single Li-ion cell without a pre-regulator.

Active lifecycle status from TI. ROHS3 compliant. No direct second-source alternate is recorded.

Frequently asked questions

Is TPS7A2028PDQNRM3 a direct replacement for TPS7A2028PDQNR?

The suffix 'M3' typically indicates a different packaging or reel option. Both share the same 2.8V fixed output and 300mA rating, but verify the package code (4-X2SON vs any alternate) and tape/reel quantity before substituting. No official cross-reference is recorded in this listing.

What is TPS7A2028PDQNRM3's listed PSRR?

PSRR is specified at 65 dB at 100 Hz, decreasing to 40 dB at 1 MHz. The roll-off is typical for a low-Iq LDO; expect less rejection above 1 MHz.