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Texas Instruments TPS75433QPWP — Power Management (PMIC / Gate Driver)

TPS75433QPWP LDO Regulator, 3.3V Fixed, 2A, 20-HTSSOP

MPNTPS75433QPWP
End of Life

Texas Instruments TPS75433QPWP LDO voltage regulator, 3.3V fixed output, 2A, positive, single regulator, 20-PowerTSSOP (0.173", 4.40mm Width), surface mount, tube.

$6.41Ref. price · indicative, final on quote
Texas Instruments TPS75433QPWP datasheet (PDF)
Packaging20-PowerTSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS75433QPWP specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input5.5V
Voltage dropout0.4V @ 2A
Voltage - output (Min (Fixed))3.3V
Output current2A
Current - quiescent125 µA
Operating temperature-40°C ~ 125°C
PSRR60dB (100Hz)
PackageTube
Case20-PowerTSSOP (0.173\", 4.40mm Width)
Control featuresEnable, Power Good, Reset Output
Protection featuresOver Current, Over Temperature, Reverse Polarity
Number of regulators1
Output configurationPositive

Product details

20-PowerTSSOP LDO, 3.3V fixed, 2A

The TPS75433QPWP: The maximum dropout voltage is 0.4 V at the full 2 A load, meaning the input rail needs to stay above 3.7 V to keep the output in regulation. Quiescent current is 125 µA typical, which keeps the self-heating low in always-on rails.

PSRR and noise rejection at line frequency

Power-supply rejection ratio is specified at 60 dB at 100 Hz — this is the 2× line-frequency (100/120 Hz) ripple from a full-wave rectifier. A 60 dB rejection means the ripple on the input is attenuated by a factor of 1000 at that frequency, so a 100 mVpp ripple on the input rail becomes roughly 0.1 mVpp on the 3.3 V output. For sensitive analog loads like a pre-amp or ADC reference, that keeps the supply noise out of the signal band.

Protection and control for unattended rails

Built-in protection covers over-current, over-temperature, and reverse polarity on the input. The control features include an enable pin, a power-good flag, and a reset output — the power-good signal can sequence a downstream load or hold a microcontroller in reset until the 3.3 V rail is stable.

Frequently asked questions

What is the PSRR of the TPS75433QPWP?

The power-supply rejection ratio is 60 dB at 100 Hz. This attenuates the 100/120 Hz ripple from a mains rectifier by a factor of 1000, keeping the output clean for sensitive analog loads.

What package does the TPS75433QPWP come in?

It is supplied in a 20-lead PowerTSSOP (HTSSOP) package, 0.173" (4.40 mm) body width, surface-mount. The exposed thermal pad on the bottom requires a soldered connection to a PCB copper plane for heat dissipation.

What compliance documentation does Texas Instruments provide for the TPS75433QPWP?

The part is ROHS3 compliant. Texas Instruments provides the standard datasheet, application notes, and RoHS certificate of compliance. No UL or IEC certification is listed in the available documentation.