What this regulator does for your sensor rail
The TLV1117-50CKVURG3 is a fixed 5V LDO rated for 800 mA continuous output — enough to power a sensor module, an MCU, or a small analog front-end without needing a separate switcher. Its 75 dB PSRR at 120 Hz means it cleans up ripple from a rectified mains supply or a switching pre-regulator, which matters when the downstream ADC or op-amp needs a quiet rail. Operating temperature spans 0°C to 125°C, so it handles indoor industrial cabinets and some under-hood environments, but not full mil-spec cold.
Dropout and protection — what the numbers mean on site
Maximum dropout is 1.3 V at 800 mA — at full load you need at least 6.3 V on the input to hold regulation. That is typical for a 5V LDO in this class; if your input bus dips below that, the output follows. Quiescent current is 10 mA — not a micropower part, but fine for a powered sensor node where the regulator is always on. Over-current and over-temperature protection are built in, so a shorted load won't kill the regulator before the fuse blows.
Package and production status
Housed in a TO-252-3 (DPak) surface-mount package with a single exposed tab for heat sinking. Texas Instruments lists this part as Active. ROHS3 compliant.