The LT3042EMSE#PBF is a low-dropout (LDO) voltage regulator from Analog Devices that offers 200mA of output current at 20V. It is designed with ultralow noise and ultrahigh power supply rejection ratios (PSRR). It is a RF linear regulator, specifically designed for frequency and precision current buffering and signal conditioning applications such as audio amplifiers, power amplifiers, filters, and power supplies. The LT3042EMSE#PBF enables power efficiency and noise reduction in applications that require precise, regulated voltage. The device’s PSRR ensures low output voltage ripple at frequencies up to 1MHz, over a wide load current range. It provides good load and line regulation, high current drive capabilities, and a low supply current. The LT3042EMSE#PBF has a short-circuit protected output with an over-temperature shutdown. The device is available in a 3mm X 3mm 8-lead DFN package with enhanced thermal characteristics.