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Overview

Features and Benefits

  • Silent Switcher 2 Architecture:
    • Ultralow EMI
    • Eliminated PCB Layout Sensitivity
    • Internal Bypass Caps Reduce Radiated EMI
  • Wide SVIN Range: 2.9V to 18V; PVIN: 1.5V to 18V
  • Wide VOUT Range: 0.5V to 0.9VIN
  • Output Current: ±5A/ Channel; up to ±20A
  • Accurate Reference: 0.5V ± 0.8% Over Temp
  • High Efficiency: Up to 96%
  • 12ns Min on-time: True 12V to 1V at 2MHz
  • Programmable Multi-phase, Synchronizable Frequency: 400kHz to 3MHz
  • Current Mode: Excellent Line and Load Transient Response
  • User Selectable Discontinuous Mode® (DCM) or Forced Continuous Mode (FCM) Operation
  • Flexible Individual Internal Compensation for Ease of Use; External for Fast Transient
  • Accurate Individual 1.2V EN/ Run Pin Threshold
  • Individual Output Tracking and Soft-Start
  • Individual Power Good Status Output
  • Low Profile 5mm x 6mm 48-Lead LQFN Package

Product Details

The LT7200S is a quad-channel, high efficiency monolithic synchronous buck regulator, capable of sinking/sourcing 5A to the load per channel. Its multichannel flexibility is ideal for powering complex systems with the compact layout. The operating supply voltage range is from 2.9V to 18V, making it suitable for various supply applications from a 3.3V, 5V to 12V supply.

The operating frequency is programmable from 400kHz to 3MHz with an external resistor, or externally synchronized for switching noise sensitive applications. The unique “phase lockable, controlled on-time, constant frequency, current mode” architecture, is ideal for high frequency, high stepdown applications while demanding fast transient responses. The high frequency capability allows smaller surface mount inductors and capacitors. The MODE/SYNC pin selects low noise Forced Continuous Mode (FCM) or high efficiency Discontinuous Mode (DCM). The PHMODE pin allows to run out-of-phase among 4 channels, which lessens the required input and output capacitors. The LT7200S uses second generation Silent Switcher technology with integrated bypass capacitors to deliver a highly efficient solution at high frequencies with excellent EMI performance.

APPLICATIONS

  • Distributed Power Systems, Server Power
  • Point of Load Supply for ASIC, FPGA, Etc.

Product Lifecycle icon-recommended Recommended for New Designs

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.

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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.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.