1. Products
  2. Power Management
  3. Switching Regulators
  4. Ultralow Noise Regulators
  5. LT8625S

Data Sheet Rev. SpA

Overview

Features and Benefits

  • 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 with High Gain Error Amplifier
  • Input Voltage Range: 2.7V to 18V
  • 8A Maximum Continuous Output Current
  • Fast Minimum Switch On-Time: 15ns
  • Precision Current Reference: 100μA ± 0.8% Over
    Temperature with Remote Sense
  • PolyPhase® Operation: Up to 12 Phases
  • Forced Continuous Mode Capability
  • Adjustable and Synchronizable: 300kHz to 4MHz
  • Programmable Power Good
  • Small 20-Lead 4mm × 3mm LQFN Package

Product Details

The LT8625S synchronous step-down regulator features third-generation Silent Switcher technology which is uniquely designed to combine 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, providing unitygain operation over the output range, 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 LT8625S is ideal for high current, noise sensitive applications which benefit from the high efficiency of a synchronous switching regulator.

APPLICATIONS

  • RF Power Suppliers: PLLs, VCOs, Mixers, LNAs, PAs
  • High Speed/High Precision ADCs/DACs
  • Low Noise Instrumentation

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This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Documentation & Resources

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    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    LT8625SIV#TRMPBF Material Declaration Reliability Data 20-Lead LQFN (4mm x 3mm x 0.94mm)
    LT8625SIV#TRPBF Material Declaration Reliability Data 20-Lead LQFN (4mm x 3mm x 0.94mm)
    Wafer Fabrication Data

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