LT8622S
Info : RECOMMENDED FOR NEW DESIGNS
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LT8622S

18V, 2A Step-Down Silent Switcher 3 with Ultralow Noise Reference

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price Starting From $2.83
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 with High Gain Error Amplifier
  • Input Voltage Range: 2.7V to 18V
  • Output Voltage Range: 0V to (PVIN - 0.5V)
  • 2A Maximum Continuous Output Current
  • Fast Minimum Switch On-Time: 12ns
  • Precision Current Reference: 100μA ± 0.8% Over Temperature
  • Differential Remote Sense Ensures Accuracy Over Load
  • 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
Additional Details
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The LT8622S/LT8624S 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 unity gain operation over the output range and 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, noise-sensitive applications that benefit from the high efficiency of a synchronous switching regulator.

Applications

  • RF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAs
  • High Speed/High Precision ADCs/DACs
  • Low Noise Instrumentation
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). Please send your project details, company information and contact by e-mail to BUC_Doc_Request@analog.com. Additional support is available from your Analog Devices local sales.
Part Models 2
1ku List Price Starting From $2.83

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT8622SAV#PBF
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  • HTML
LT8622SAV#TRPBF
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  • HTML
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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EVAL-LT8622S

18V, 2A Step-Down Silent Switcher with Low Noise Reference

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EVAL-LT8622S

18V, 2A Step-Down Silent Switcher with Low Noise Reference

18V, 2A Step-Down Silent Switcher with Low Noise Reference

Product Detail

The demonstration circuit EVAL-LT8622S-AZ is a 18V, 2A synchronous Silent Switcher 3® step-down regulator with ultra-low noise, high efficiency, and power density featuring the LT8622S. The input voltage range of EVAL-LT8622S-AZ is 2.7V to 18V. The default demo board setting is 1.0V at 2A maximum DC output current. The LT8622S is a compact, ultra-low noise, ultra-low emission, high efficiency, and high speed synchronous monolithic step-down switching regulator. The uniquely designed combination of the ultra-low noise reference and third-generation Silent Switcher architecture enables the LT8622S to achieve both high efficiency and excellent wideband noise performance. Minimum on-time of 12ns allows high VIN to low VOUT conversion at high frequency.

Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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