LT8622S

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet (Rev. B) Product Selection Table
Part Models
2
1ku List Price
Starting From $2.83
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Part Details

  • 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
  • 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
LT8622S
18V, 2A Step-Down Silent Switcher 3 with Ultralow Noise Reference
LT8622S/LT8624S Performance Graph LT8622S/LT8624S Application Circuit LT8622S Chip
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Documentation

Data Sheet 1

Technical Articles 2

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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

  • LT8622S
LTspice

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.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
EVAL-LT8622S

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

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Product Details

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.
EVAL-LT8622S
18V, 2A Step-Down Silent Switcher with Low Noise Reference
EVAL-LT8622S-AZ Evaluation Board EVAL-LT8622S-AZ Evaluation Board Top View EVAL-LT8622S-AZ Evaluation Board Bottom View

Reference Designs

Intel Agilex 7 FPGA F-series Development Kit (Alternative Monolithic) Power Tree
Intel Agilex 7 FPGA F-series Development Kit (Alternative Monolithic) Power Tree
Intel Agilex 7 FPGA F-series Development Kit (Alternative Monolithic) Circuits from the lab

Altera FPGA

View Detailed Reference Design

Features and Benefits

  • Intel Agilex 7 F-Series devices target a wide range of applications across many markets. This series offers transceiver rates up to 58 Gbps, advanced DSP blocks supporting multiple precisions of fixed-point and floating-point operations, and high-performance crypto blocks.
  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications.
  • Our reference designs are supported by an intuitive design tool set and IP.
  • ADI provides supporting documentation including LTpowerPlanner and applicable LTpowerPlay configuration files to enable you to validate the power solution for your application seamlessly. Our team can provide samples and/or evaluation boards for quick validation that can speed time to market in the most complex applications.
  • For a complete list power designs and use cases, please contact your local FAE.
Intel Agilex 7 FPGA F-series Development Kit (Alternative Monolithic)
Altera FPGA
Intel Agilex 7 FPGA F-series Development Kit (Alternative Monolithic) Power Tree

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