LT8624S Datasheet | Analog Devices

Data Sheet LT8622S/LT8624S 18V, 2A/4A Step-Down Silent Switcher 3 with Ultralow Noise Reference Features - Silent Switcher®3 Architecture - Ultralow RMS Noise (10Hz to 100kHz): 4μVRMS - Ultralow Spot Noise: 4nV/√Hz at 10kHz - Ultralow EMI Emissions on Any PCB - Internal Bypass Capacitors Reduce Radiated EMI - High Efficiency at High Frequency - Ultrafast Transient Response: 1μs - Fast Minimum Switch On-Time: 12ns - Input Voltage Range: 2.7V to 18V - Output Voltage Range: 0V to (PVIN - 0.5V) - 2A/4A Maximum Continuous Output Current - Precision Reference: ± 0.8% Over Temperature with Remote Sense - PolyPhase® Operation: Up to 12 Phases - Forced Continuous Mode Capability - Adjustable and Synchronizable: 300kHz to 6MHz - Programmable Power Good - Small 20-Lead 4mm x 3mm LQFN Package APPLICATIONS - RF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAs - High Speed/High Precision ADCs/DACs - Low Noise Instrumentation GENERAL DESCRIPTION The LT®8622S/LT®8624S synchronous step-down regulator Features third-generation Silent Switcher technology, which is uniquely designed to bine an ultralow noise reference with Silent Switcher architecture in order to achieve both high efficiency and excellent wideband noise performance. The innovative ultralow-noise architecture provides exceptional low-frequency (0.1Hz to 100kHz) output noise performance in a switching regulator. The output voltage can be programmed with a single resistor, resulting in virtually constant output noise independent of output voltage. Silent Switcher architecture minimizes EMI emissions while delivering high efficiency at high switching frequencies. The LT8622S/LT8624S is ideal for high-current, noisesensitive applications that benefit from the high efficiency of a synchronous switching regulator....