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Texas Instruments TPS71733DCKT — Power Management (PMIC / Gate Driver)

TPS71733DCKT LDO Regulator, 3.3V Fixed Output, 150mA

MPNTPS71733DCKT
End of Life

Texas Instruments TPS71733DCKT, linear voltage regulator, fixed 3.3V output, 150mA, PSRR 70dB ~ 45dB (100Hz ~ 1MHz), dropout 0.3V max at 150mA, quiescent 80µA, SC-70-5, -40°C to 125°C.

$1.54Ref. price · indicative, final on quote
Packaging5-TSSOP, SC-70-5, SOT-353
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS71733DCKT specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input6.5V
Voltage dropout0.3V @ 150mA
Voltage - output (Min (Fixed))3.3V
Output current150mA
Current - supply100 µA
Current - quiescent80 µA
Operating temperature-40°C ~ 125°C
PSRR70dB ~ 45dB (100Hz ~ 1MHz)
PackageTape & Reel (TR); Cut Tape (CT)
Case5-TSSOP, SC-70-5, SOT-353
Control featuresEnable
Protection featuresOver Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
Number of regulators1
Output configurationPositive

Product details

Protection set and temperature grade

The regulator integrates over-current, over-temperature, reverse-polarity, and under-voltage lockout (UVLO) protection — the UVLO ensures the output stays off until the input is high enough for proper regulation, which prevents glitched start-up. The enable pin (active-high) gives a clean on/off control for sequencing or power-save modes.

Housed in a 5-pin SC-70-5 (also known as SOT-353), the TPS71733DCKT occupies minimal board area. Surface-mount assembly is straightforward; the small body suits dense multi-rail designs. The supplier device package is SC-70-5.

Frequently asked questions

Is TPS71733DCKT compatible with 3.3V output applications?

Yes, the TPS71733DCKT has a fixed 3.3V output, making it a direct fit for any 3.3V rail. It delivers up to 150mA with a maximum dropout of 0.3V at full load.

What is TPS71733DCKT's PSRR specification?

The PSRR is 70dB at 100Hz, decreasing to 45dB at 1MHz. This makes it suitable for post-regulating switching noise from a DC-DC converter, especially in the 100Hz to 1MHz range where many converters operate.