LT3045

LT3045 20V, 500mA, Ultralow Noise, Ultrahigh PSRR Linear Regulator FEATURES n Ultralow RMS Noise: 0.8µVRMS (10Hz to 100kHz) n Ultralow Spot Noise: 2nV/√Hz at 10kHz n Ultrahigh PSRR: 76dB at 1MHz n Output Current: 500mA n Wide Input Voltage Range: 1.8V to 20V n Single Capacitor Improves Noise and PSRR n 100µA SET Pin Current: ±1% Initial Accuracy n Single Resistor Programs Output Voltage n High Bandwidth: 1MHz n Programmable Current Limit n Low Dropout Voltage: 260mV n Output Voltage Range: 0V to 15V n Programmable Power Good n Fast Start-Up Capability n Precision Enable/UVLO n Parallelable for Lower Noise and Higher Current n Internal Current Limit with Foldback n Minimum Output Capacitor: 10µF Ceramic n Reverse-Battery and Reverse-Current Protection n 12-Lead MSOP and 10-Lead 3mm × 3mm DFN Packages n AEC-Q100 Qualified for Automotive Applications APPLICATIONS n RF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAs n Very Low Noise Instrumentation n High Speed/High Precision Data Converters n Medical Applications: Imaging, Diagnostics n Precision Power Supplies n Post-Regulator for Switching Supplies DESCRIPTION The LT®3045 is a high performance low dropout linear regulator featuring LTC’s ultralow noise and ultrahigh PSRR architecture for powering noise sensitive applications. Designed as a precision current reference followed by a high performance voltage buffer, the LT3045 can be easily paralleled to further reduce noise, increase output current and spread heat on the PCB. T...