The LT3045 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. The device supplies 500mA at a typical 260mV dropout voltage. Operating quiescent current is nominally 2.2mA and drops to <<1µA in shutdown. The LT3045’s wide output voltage range (0V to 15V) while maintaining unity-gain operation provides virtually constant output noise, PSRR, bandwidth and load regulation, independent of the programmed output voltage. Additionally, the regulator features programmable current limit, fast start-up capability and programmable power good to indicate output voltage regulation. The LT3045 is stable with a minimum 10µF ceramic output capacitor. Built-in protection includes reverse-battery protection, reverse-current protection, internal current limit with foldback and thermal limit with hysteresis. The LT3045 is available in thermally enhanced 12-Lead MSOP and 10-Lead 3mm × 3mm DFN packages. The LT3045-EP supports defense and aerospace applications (AQEC). VIOC Function LT3045-1 Yes LT3045 No Applications * RF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAs * Very Low Noise Instrumentation * High Speed/High Precision Data Converters * Medical Applications: Imaging, Diagnostics * Precision Power Supplies * Post-Regulator for Switching Supplies * Ultralow RMS Noise: 0.8µVRMS (10Hz to 100kHz) * Ultralow Spot Noise: 2nV/√Hz at 10kHz * Ultrahigh PSRR: 76dB at 1MHz * Output Current: 500mA * Wide Input Voltage Range: 1.8V to 20V * Single Capacitor Improves Noise and PSRR * 100µA SET Pin Current: ±1% Initial Accuracy * Single Resistor Programs Output Voltage * High Bandwidth: 1MHz * Programmable Current Limit * Low Dropout Voltage: 260mV * Output Voltage Range: 0V to 15V * Programmable Power Good * Fast Start-Up Capability * Precision Enable/UVLO * Parallelable for Lower Noise and Higher Current * See data sheet for additional features https://elecena.pl/product/6370772/20v-500ma-ultralow-noise-ultrahigh-psrr-linear-regulator 2016-09-18 https://elecena.pl/product/6370772/20v-500ma-ultralow-noise-ultrahigh-psrr-linear-regulator 2017-04-13 https://elecena.pl/product/6370772/20v-500ma-ultralow-noise-ultrahigh-psrr-linear-regulator 2025-01-19