LTC4450

RECOMMENDED FOR NEW DESIGNS

LTC4450

18V, 12A Ideal Diode

RECOMMENDED FOR NEW DESIGNS

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1ku List Price Starting From $2.07

Features

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 V_CC > 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

Additional 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 R_DS(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 V_CC input allows V_IN 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

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Ask a Question

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Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 2

1ku List Price Starting From $2.07

Documentation

Technical Documents 2

LTC4450: 18V, 12A Ideal Diode Data Sheet (Rev.0) 09/21/2021

DC3001A-A - Demo Manual (Rev.0) 10/01/2021

Reference Materials 3

Ideal Diodes and Prioritizers 06/08/2018

Power You Can Trust: Achieving Efficient Battery-Powered Solutions 11/07/2023

Enhance Sustainable Logistics with Automatic Data Capture 11/13/2022

Design Resources 2

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. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC4450AV#TRMPBF	16-Lead LQFN (2mm x 3mm x 0.75mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC4450AV#TRPBF	16-Lead LQFN (2mm x 3mm x 0.75mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LTC4450AV#TRMPBF
Pin/Package Drawing
16-Lead LQFN (2mm x 3mm x 0.75mm)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC4450AV#TRPBF
Pin/Package Drawing
16-Lead LQFN (2mm x 3mm x 0.75mm)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

Software & Part Ecosystem

Evaluation Kit

DC3001A-A

LTC4450 | 18V, 12A Low Quiescent Current Ideal Diode with Shutdown Mode

DC3001A-A Evaluation Board - Bottom View

LTC4450 | 18V, 12A Low Quiescent Current Ideal Diode with Shutdown Mode

Download

DC3001A-A

LTC4450 | 18V, 12A Low Quiescent Current Ideal Diode with Shutdown Mode

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Product Detail

Demonstration Circuit 3001A-A showcases the LTC4450 ideal diode controller with an integrated low R_DS(ON) MOSFET. The board includes two independent LTC4450 ideal diodes sharing a common ground and operates over a range of 0V to 18V, carrying up to 12A. The board can be set up in a diode-OR configuration by connecting the output channels together.

Resources

PDF

DC3001A-A - Demo Manual (Rev.0)

669.4 K

PDF

DC3001A - Schematic

293.9 K

ZIP

DC3001A-A - Design Files

4.75 M

DC3001A-A

LTC4450 | 18V, 12A Low Quiescent Current Ideal Diode with Shutdown Mode

Tools & Simulations

LTspice 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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.