LT8625S
Info : RECOMMENDED FOR NEW DESIGNS
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LT8625S

18V/8A 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 $4.07
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: 15ns
  • Input Voltage Range: 2.7V to 18V
  • Output Voltage Range: 0V to (PVIN − 0.5V)
  • 8A Maximum Continuous Output Current
  • Precision Reference: 0.8% Over
    Temperature with Remote Sense
  • Supports Dynamic Output Voltage Control
  • 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
Additional Details
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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, 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
Part Models 2
1ku List Price Starting From $4.07

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT8625SIV#TRMPBF
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LT8625SIV#TRPBF
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC3219A

LT8625S | 18V, 8A Synchronous Step-Down Silent Switcher with Low Noise Reference

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DC3219A

LT8625S | 18V, 8A Synchronous Step-Down Silent Switcher with Low Noise Reference

LT8625S | 18V, 8A Synchronous Step-Down Silent Switcher with Low Noise Reference

Product Detail

Demonstration circuit 3219A is a 18V, 8A synchronous step-down Silent Switcher 3 with ultralow noise, high efficiency and power density featuring the LT8625S. The input voltage range of DC3219A is 2.7V to 18V. The default demo board setting is 1.0V at 8A maximum DC output current. The LT8625S is a compact, ultralow noise, ultralow emission, high efficiency and high speed synchronous monolithic step-down switching regulator. The uniquely designed combination of the ultralow noise reference and the third-generation Silent Switcher architecture enables the LT8625S to achieve both high efficiency and excellent wideband noise performance. Minimum on-time of 15ns allows high VIN to low VOUT conversion at high frequency.

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.

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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