The LT1761IS5-3.3#TRPBF is an ultra low noise, low dropout micropower voltage regulator made by Analog Devices. It is typically used to provide low dropout performance and ultra low dropout noise in a small, space-saving package. It supports an input voltage range between 2.7 and 5.5 volts, allowing for a wide range of applications. It also features an adjustable output voltage between 0.8 and 3.3 volts, and an output current up to 100 mA. It also features protection against short-circuits and over-temperature conditions. It is available in an 8-pin SOIC package, making it ideal for consumer, industrial, and automotive applications.