ADP2443

Data Sheet

Rev. 0 | Page 2 of 24

TABLE OF CONTENTS

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

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

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

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

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

Functional Block Diagram .............................................................. 3

Specifications..................................................................................... 4

Absolute Maximum Ratings............................................................ 6

Thermal Resistance ...................................................................... 6

ESD Caution.................................................................................. 6

Pin Configuration and Function Descriptions............................. 7

Typical Performance Characteristics ............................................. 8

Theory of Operation ...................................................................... 13

Control Scheme .......................................................................... 13

Precision Enable/Shutdown ...................................................... 13

Internal Regulator (VREG)....................................................... 13

Bootstrap Circuitry .................................................................... 13

Oscillator ..................................................................................... 13

Synchronization.......................................................................... 13

Soft Start ...................................................................................... 14

Power Good................................................................................. 14

Peak Current-Limit and Short-Circuit Protection................. 14

Overvoltage Protection (OVP)................................................. 14

Undervoltage Lockout (UVLO) ............................................... 14

Thermal Shutdown..................................................................... 14

Applications Information .............................................................. 15

Input Capacitor Selection.......................................................... 15

Output Voltage Setting .............................................................. 15

Voltage Conversion Limitations............................................... 15

Inductor Selection ...................................................................... 15

Output Capacitor Selection....................................................... 17

Programming Input Voltage UVLO ........................................ 17

Slope Compensation Setting..................................................... 17

Compensation Design ............................................................... 17

ADIsimPower Design Tool ....................................................... 18

Design Example .............................................................................. 19

Output Voltage Setting .............................................................. 19

Frequency Setting....................................................................... 19

Inductor Selection ...................................................................... 19

Output Capacitor Selection....................................................... 20

Slope Compensation Setting..................................................... 20

Compensation Components..................................................... 20

Soft Start Time Program ........................................................... 20

Input Capacitor Selection.......................................................... 20

Recommended External Components .................................... 21

Printed Circuit Board Layout Recommendations ..................... 22

Typical Applications Circuits........................................................ 23

Outline Dimensions....................................................................... 24

Ordering Guide .......................................................................... 24

REVISION HISTORY

9/2016—Revision 0: Initial Version