1.8V fixed rail for noise-sensitive loads
The Texas Instruments TPS76918DBVR is a fixed-output 1.8V LDO rated for 100 mA, built for applications where a clean, regulated rail is needed from an input up to 10V. Its 28 µA quiescent current keeps the idle draw low, making it a fit for always-on subsystems in industrial sensors, automotive modules, or portable gear. The 60 dB PSRR at 1 kHz means it rejects supply ripple well enough to power a precision op-amp or an ADC reference without adding a second post-filter.
Industrial temp and protection set
Rated from -40°C to 125°C, this part handles engine-bay heat and cold-soak starts without derating the output. On-chip protection covers over-current, over-temperature, and reverse polarity — the reverse-polarity clamp is worth noting for field wiring where the input supply might be connected backwards during bench work. The enable pin lets a system supervisor gate the rail off in standby, dropping the load to near-zero draw.
Package and footprint
Housed in a SOT-23-5 (SOT-753), the part fits a compact PCB layout. The fixed output saves one feedback resistor compared to adjustable LDOs, which simplifies the BOM and shrinks the placement area. Surface-mount assembly is straightforward for reflow or wave-solder lines.
Sourcing and lifecycle
This part carries an Active lifecycle status with ROHS3 compliance. For a BOM that needs a 1.8V LDO in a SOT-23-5 footprint, the TPS76918DBVR is a current, manufacturable choice — no supply-risk flags.