The LTC3803IS6#TRPBF is a low noise high PSRR switching regulator controller from Analog Devices. It features low noise operation and high power supply rejection ratio (PSRR) linear regulators in a small, compact package. It enables the design of low-noise, high-PSRR linear regulators that can be used in a variety of applications, such as automotive and industrial systems, communications equipment, and portable products. The device is highly flexible, allowing for customizing the output voltage, output current, and switching frequency. It also features programmable soft-start for more accurate start-up and shutdown, over-voltage protection, temperature monitoring, current limiting, and pGO protection.