What this LDO brings to an automotive power rail
The Texas Instruments TPS74628PQWDRVRQ1 is a 2.8 V fixed-output LDO rated for 1 A continuous output, qualified to AEC-Q100 for automotive applications. The part includes enable control and built-in over-current and over-temperature protection — the basics you need for a supervised power rail in an ECU or sensor module.
PSRR profile — where it helps and where it doesn't
PSRR is specified at 53 dB at 1 kHz, dropping to 30 dB at 1 MHz. That means the part attenuates low-frequency ripple — alternator whine or switching-regulator ripple in the tens to hundreds of kHz — effectively. Above 1 MHz the rejection rolls off, so a post-filter or a separate LDO with higher high-frequency PSRR may be needed if the rail feeds a sensitive RF or high-speed digital load.
For a BOM line needing an automotive-grade LDO, this part is a straightforward fit.