ADuM3470/ADuM3471/ADuM3472/ADuM3473/ADuM3474

Rev. 0 | Page 2 of 32

TABLE OF CONTENTS

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

 

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

 

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

 

Functional Block Diagrams............................................................. 1

 

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

 

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

 

Electrical Characteristics—5 V Primary Input Supply/5 V

Secondary Isolated Supply .......................................................... 3

 

Electrical Characteristics—3.3 V Primary Input Supply/3.3 V

Secondary Isolated Supply .......................................................... 5

 

Electrical Characteristics—5 V Primary Input Supply/3.3 V

Secondary Isolated Supply .......................................................... 7

 

Electrical Characteristics—5 V Primary Input Supply/15 V

Secondary Isolated Supply .......................................................... 9

 

Package Characteristics ............................................................. 11

 

Regulatory Approvals................................................................. 11

 

Insulation and Safety-Related Specifications.......................... 11

 

DIN V VDE V 0884-10 (VDE V 0884-10) Insulation

Characteristics ............................................................................ 12

 

Recommended Operating Conditions .................................... 12

 

Absolute Maximum Ratings.......................................................... 13

 

ESD Caution................................................................................ 13

 

Pin Configurations and Function Descriptions ......................... 14

 

Typical Performance Characteristics ........................................... 19

 

Terminology .................................................................................... 24

 

Applications Information .............................................................. 25

 

Theory of Operation .................................................................. 25

 

Application Schematics ............................................................. 25

 

Transformer Design ................................................................... 26

 

Transformer Turns Ratio........................................................... 26

 

Transformer ET Constant ......................................................... 26

 

Transformer Primary Inductance and Resistance ................. 26

 

Transformer Isolation Voltage .................................................. 27

 

Switching Frequency.................................................................. 27

 

Transient Response .................................................................... 27

 

Component Selection ................................................................ 27

 

Printed Circuit Board (PCB) Layout ....................................... 28

 

Thermal Analysis ....................................................................... 28

 

Propagation Delay-Related Parameters................................... 28

 

DC Correctness and Magnetic Field Immunity........................... 29

 

Power Consumption .................................................................. 30

 

Power Considerations................................................................ 30

 

Insulation Lifetime ..................................................................... 31

 

Outline Dimensions ....................................................................... 32

 

Ordering Guide .......................................................................... 32

 

REVISION HISTORY

10/10—Revision 0: Initial Version