Fixed 3 V rail for noise-sensitive loads
The Texas Instruments TPS76430DBVR is a single-output positive LDO delivering a fixed 3 V at 150 mA from a 10 V maximum input. Its 60 dB PSRR at 1 kHz means it cleans up switching supply ripple well enough to feed low-noise analog front-ends or quiet digital rails. The Enable pin lets a supervisor or GPIO sequence the rail on/off without a series FET. Enable is active-high; floating it turns the output off.
Temperature range and package — board fit
Rated -40°C to 125°C, this regulator handles engine-bay ambient or industrial enclosures near hot power stages. Surface-mount only, so plan for reflow or hand-solder with a fine tip. The 100 µA quiescent current and 140 µA max supply current make it a candidate for battery-powered gear where every microamp of standby matters.
Protection set and output tolerance
Integrated over-current, over-temperature, and reverse polarity protection cover the common fault cases. Output is fixed at 3 V — no resistor divider needed, no adjustment pin to bypass. The Fixed output type means the BOM stays simple: just an input cap and an output cap per the datasheet recommendation.
Lifecycle and sourcing posture
No LTB or NRND flags — this part is current for new designs and production replenishment.