LT3046 Ultra-High PSRR Linear Regulators

Analog Devices Inc. LT3046 Ultra-High PSRR Linear Regulators are high-performance, low-dropout linear regulators featuring ultra-low noise and ultra-high PSRR architecture for powering noise-sensitive applications. Designed as a precision current reference followed by a high-performance voltage buffer, the LT3046 can be easily paralleled to reduce noise further, increase output current, and spread heat on the PCB. The series is available in a thermally enhanced, 12-lead, 3mm x 3mm DFN package. The devices supply 200mA at a typical 300mV dropout voltage. The operating quiescent current is nominally 3.7mA and drops to 26μA in shutdown. While maintaining unity-gain operation, the LT3046's wide output-voltage range (0.2V to 19V) provides virtually constant output noise, PSRR, bandwidth, and load regulation, independent of the programmed output voltage.