The LT3094EDD#PBF is a negative linear regulator manufactured by Analog Devices. It is an ultralow noise and ultrahigh PSRR (Power Supply Rejection Ratio) LDO (low-dropout) voltage regulator, capable of regulating -20V and providing up to 500mA of current. It has a low quiescent current and advanced dynamic and transient response performance, making it suitable for a wide range of applications such as medical instrumentation, communications and audio systems, computers and peripheral equipment, and other noise-sensitive applications. The LT3094EDD#PBF features a wide supply voltage range of up to -26V, adjustable output voltage from -1.2V to -19V, current limit foldback for improved power supply response, and a high PSRR of 80dB. Other features include a shutdown pin for low-power operation, an internally current-limited output, reverse-battery protection, and thermal overload protection.