Fixed 2V rail with 65dB ripple rejection
The LT1761IS5-2#TRMPBF is a fixed-output low-dropout regulator delivering 100 mA at 2 V from a 20 V max input rail. Its 65 dB PSRR at 120 Hz means it cleans up rectified line-frequency ripple — useful when powering analog front-ends or reference circuits from an unregulated supply. Dropout is 0.45 V max at the full 100 mA load, so the input needs to stay above 2.45 V to keep the output in regulation. The Enable pin lets you gate the output for sequenced power-up or low-power sleep modes.
Industrial temp range and protection set
The protection block includes over-current, over-temperature, and reverse-polarity — the reverse-polarity clamp means a swapped supply won't instantly kill the part. Housed in a TSOT-23-5, the footprint is small enough for tight layouts but still hand-solderable with a fine tip or hot air. The exposed pad on the underside (if present on the TSOT variant) helps pull heat into the board copper — keep a thermal via under the pad for 100 mA continuous.