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Overview

Features and Benefits

  • Reduces Power Dissipation by Replacing a Power Schottky Diode with No External Components
  • Internal 12A, 7mΩ N-Channel MOSFET
  • 15mV Regulated Forward Voltage
  • 20μA Operating Current, 0.8μA Shutdown
  • Wide 0V to 18V Input Range with VCC > 2.75V
  • Fast Turn-ON Minimizes Voltage Droop
  • Fast Reverse Recovery Time Minimizes Reverse Transient Current
  • Smooth Switchover in Diode-OR Applications
  • 16-Lead 2mm × 3mm LQFN Package

Product Details

The LTC4450 is a high performance Schottky diode replacement using an integrated N-Channel power MOSFET. It easily ORs power supplies together to increase system reliability and prevent reverse conduction.

The LTC4450 regulates the forward voltage at 15mV to minimize power loss compared to Schottky diodes. Regulation ensures smooth current transfer without oscillation in diode-OR applications. When the power MOSFET is fully enhanced, the RDS(ON) of the transistor is 7mΩ and rated for forward conduction up to 12A while dissipating 1W. A high performance gate driver with fast transient response minimizes both forward power dissipation and reverse current. The VCC input allows VIN to work down to ground for low voltage applications. The LTC4450 is available in a small 16-Lead 2mm × 3mm LQFN Package.

APPLICATIONS

  • Schottky Diode Replacement
  • Industrial, Medical and Consumer Portable Devices
  • Battery and Wall Adapter Diode-ORing

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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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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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.