What this adjustable LDO brings to the rail
PSRR sits at 60 dB at 1 kHz — moderate rejection that cleans up switching-regulator ripple but won't compete with a high-PSRR LDO for sensitive analog front-ends. The quiescent current of 225 µA and max supply current of 325 µA keep the part efficient for always-on or battery-backed rails. Protection covers over-current, over-temperature, reverse polarity, and UVLO, so it survives a miswired bench or a hot reflow cycle.
Package and mounting
The SOT-223-6 package is a tabbed surface-mount part with moderate thermal mass. The exposed pad on the bottom side needs a good solder joint to the board's copper pour for heat sinking — check your pad layout for a thermal via cluster under the tab. Rework with hot air is doable if the board has enough preheat; the tab can act as a heat sink that makes the part stubborn to lift.
Where it fits and the temperature range
Rated for -40°C to 125°C, this LDO suits industrial control cabinets, outdoor telecom gear, automotive body electronics, and engine-bay-adjacent modules that see under-hood heat.
Sourcing and lifecycle
TI lists the TPS72501DCQ as Active and ROHS3 compliant. No end-of-life notice or last-time-buy window is in the record, so this part is safe to qualify into a new BOM or maintain as a production line item.