LT4422

RECOMMENDED FOR NEW DESIGNS

28V, 4A Ideal Diode

Data Sheet (Rev. 0) Product Selection Table

Part Models: 1
1ku List Price: Starting From $2.49

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Overview

Internal 50mΩ Power Path
Wide Operating Voltage Range: 1.9V to 28V
Reverse Current Protection
Low 10μA Quiescent Current
Fast 3μs Response to Load Steps
Low 500nA Off State Current
Smooth Switchover in Diode-OR Applications
10-Lead (3mm x 2mm x 0.75mm) LDFN Package

The LT^®4422 is an ideal 1.9V to 28V diode with integrated P-channel MOSFET. When enabled, 15mV forward voltage regulation minimizes power dissipation while increasing operating headroom and efficiency compared to a Schottky diode.

The LT4422 easily ORs power supplies together to increase system reliability and prevent reverse conduction. A non-enabled LT4422 blocks up to 28V at the output while exhibiting less than 1μA (typical) leakage current, providing orders of magnitude improvement over typical Schottky diodes, which leads to extended battery life.

Fast OUT to IN reverse bias detection minimizes reverse current, preventing undesired charging of input batteries. The open-drain STATUS output pulls low when the LT4422 is in shutdown or reverse bias.

Part Models: 1
1ku List Price: Starting From $2.49

Documentation

Data Sheet 1

LT4422: 28V, 4A Ideal Diode Data Sheet (Rev.0) 11/08/2024

User Guide 1

EVAL-LT4422-AZ User Guide: 28V, 4A Ideal Diode (Rev.0) 11/08/2024

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
LT4422AV#TRPBF	LGA/CASON/CH ARRY SO NO LD	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Evaluation Kits

28V, 4A Ideal Diode

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Product Details

The EVAL-LT4422-AZ evaluation circuit showcases the LT4422, an ideal diode with integrated P-channel MOSFETs. The LT442 is designed to minimize power dissipation by regulating a 15mV forward voltage when enabled. Its fast OUT to IN reverse bias detection minimizes reverse current to prevent unwanted charging of the input source. The board features two independent LT4422 ideal diodes that share a common ground and operate over a 1.9V to 28V range.

In shutdown mode, the LT4422 exhibits less than 500nA (typical) quiescent current to extend battery life.

Design files for this circuit board are available.

Resources

EVAL-LT4422-AZ Design Files
11/8/2024

EVAL-LT4422-AZ - Schematic
11/8/2024

EVAL-LT4422-AZ User Guide: 28V, 4A Ideal Diode (Rev.0)
11/8/2024

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