LT7200SAVPBF datasheet(2/35 Pages) AD

2 / 35 page

Data Sheet

LT7200S

analog.com

Rev 0

2 of 35

TABLE OF CONTENTS

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

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

Description..............................................................................1

Typical Application.................................................................1

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

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

Absolute Maximum Ratings ...................................................5

Pin Configurations and Function Descriptions.....................6

Typical Performance Characteristics ....................................9

Block Diagram.......................................................................14

Theory of Operation .............................................................15

Main Control Loop............................................................15

“Power Good” Status Output ..........................................15

VIN Overvoltage Protection...............................................15

Overcurrent and Short-Circuit Protection......................15

MODE/SYNC Operation ....................................................16

Multiphase Operation ......................................................16

Applications Information .....................................................17

Programming Switching Frequency ...............................17

Inductor Selection ...........................................................17

Selecting the Input Capacitor (CIN) .................................18

Selecting the Output Capacitor (COUT) ...........................19

Using Ceramic Input and Output Capacitors .................19

INTVCC Regulator Bypass Capacitor ................................20

Output Voltage Programming.........................................20

Soft-Start and Output Voltage TRACK............................20

Minimum Off-Time and Minimum On-Time

Considerations.................................................................22

Internal/External ITH Compensation .............................22

Checking Transient Response.........................................23

Efficiency Considerations................................................24

Thermal Conditions .........................................................25

Silent Switcher Architecture ...........................................25

Board Layout Considerations .........................................25

Design Example................................................................26

Typical Applications.............................................................28

Outline Dimensions..............................................................33

Ordering Guide .....................................................................34

REVISION HISTORY

Nature of Change

Page Number

10/2022 – REV 0

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