製品概要

機能と利点

  • Dual 10A or Single 20A Output
  • Wide Input Voltage Range: 4.5V to 20V
    • 2.375VMIN with CPWR Bias
  • Output Voltage Range: 0.6V to 5.5V
  • ±1.5% Maximum Total DC Output Error
  • Multiphase Current Sharing
  • Differential Remote Sense Amplifier, Each Channel
  • Current Mode Control/Fast Transient Response
  • Up to 96% Efficiency
  • Adjustable Switching Frequency (250kHz to 1.3MHz)
  • Frequency Synchronization
  • Overcurrent Foldback Protection
  • Output Overvoltage Protection
  • Internal or External Compensation
  • Built-In Temperature Monitoring Diode
  • SnPb or RoHS Compliant Finish
  • 11.25mm × 15mm × 5.01mm BGA Package

製品概要

The LTM4646 is a complete dual 10A output switching mode DC/DC power supply. Included in the package are the switching controller, power FETs, inductors, and all supporting components. Operating from an input voltage range of 4.5V to 20V, the LTM4646 supports two outputs each with an output voltage range of 0.6V to 5.5V, set by external resistors. Its high efficiency design delivers up to 10A continuous current for each output. Only a few input and output capacitors are needed.

The device supports frequency synchronization, multiphase operation, high efficiency light load operation and output voltage tracking for supply rail sequencing and has an on-board temperature diode per channel for device temperature monitoring. High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability.

Fault protection features include overvoltage and overcurrent protection. The power module is offered in a small footprint 11.25mm × 15mm × 5.01mm BGA package. The LTM4646 is available with SnPb or RoHS compliant terminal finish.

Applications

  • Point-of-Load Power Supplies
  • Telecom and Networking Equipment
  • Industrial Equipment
  • Medical Equipment

製品ライフサイクル icon-recommended 製造中

この製品ファミリーの1つ以上の型番が生産/供給中です。新規の設計に適していますが、より新しい代替製品を提供している場合があります。

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LTspice

LTspice®は、無料で提供される強力で高速な回路シミュレータと回路図入力、波形ビューワに改善を加え、アナログ回路のシミュレーションを容易にするためのモデルを搭載しています。

 

LTspice

下記製品はLTspiceで使用することが出来ます。:

LTM4646

LTpowerCAD

LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

LTPowerCAD

Design tools for the following parts are available in LTpowerCAD:

LTM4646

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設計リソース

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.

ディスカッション

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