Data Sheet

LT4423

analog.com

Rev. 0

2 of 18

TABLE OF CONTENTS

Features......................................................................................................................................................................................................1

Applications ...............................................................................................................................................................................................1

General Description...................................................................................................................................................................................1

Simplified Application Diagram................................................................................................................................................................1

Revision History .........................................................................................................................................................................................2

Specifications.............................................................................................................................................................................................3

Absolute Maximum Ratings ......................................................................................................................................................................4

Pin Configurations and Function Descriptions........................................................................................................................................5

Typical Performance Characteristics .......................................................................................................................................................6

Block Diagram............................................................................................................................................................................................8

Theory of Operation ..................................................................................................................................................................................8

Applications Information ..........................................................................................................................................................................9

USB PD 3.0 and Back-Up Battery Supply.............................................................................................................................................9

Automatic Power Path Control ............................................................................................................................................................9

5V Power Ride-Through ......................................................................................................................................................................10

High-Voltage Load Switch with Load Sharing and Undervoltage Lockout .....................................................................................11

Layout and Thermal Considerations .................................................................................................................................................11

Typical Applications ................................................................................................................................................................................12

High-Load Current Application ..........................................................................................................................................................12

Reverse Input Voltage Protection ......................................................................................................................................................13

Related parts............................................................................................................................................................................................15

Outline Dimensions .................................................................................................................................................................................16

Ordering Guide.........................................................................................................................................................................................17

REVISION HISTORY

REVISION

NUMBER

REVISION

DATE

DESCRIPTION

PAGES

CHANGED

0

08/24

Initial Release

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