ADP2384(Rev0) データシートの表示（PDF） - Analog Devices

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ADP2384
(Rev.:Rev0)

20 V, 4 A, Synchronous, Step-Down DC-to-DC Regulator

Analog Devices 

ADP2384

TABLE OF CONTENTS

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

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

Typical Applications Circuit............................................................ 1

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

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

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

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

Thermal Resistance ...................................................................... 5

ESD Caution.................................................................................. 5

Pin Configuration and Function Descriptions............................. 6

Typical Performance Characteristics ............................................. 7

Functional Block Diagram ............................................................ 11

Theory of Operation ...................................................................... 12

Control Scheme .......................................................................... 12

Precision Enable/Shutdown ...................................................... 12

Internal Regulator (VREG) ....................................................... 12

Bootstrap Circuitry .................................................................... 12

Oscillator ..................................................................................... 12

Synchronization .......................................................................... 12

Soft Start ...................................................................................... 13

Power Good................................................................................. 13

Peak Current-Limit and Short-Circuit Protection................. 13

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

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

REVISION HISTORY

8/12—Revision 0: Initial Version

Data Sheet

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

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

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

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

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

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

Output Capacitor Selection....................................................... 16

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

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

ADIsimPower Design Tool ....................................................... 17

Design Example .............................................................................. 18

Output Voltage Setting .............................................................. 18

Frequency Setting....................................................................... 18

Inductor Selection ...................................................................... 18

Output Capacitor Selection....................................................... 19

Compensation Components ..................................................... 19

Soft Start Time Program ........................................................... 19

Input Capacitor Selection.......................................................... 19

Recommended External Components .................................... 20

Circuit Board Layout Recommendations ................................... 21

Typical Applications Circuits........................................................ 22

Outline Dimensions ....................................................................... 23

Ordering Guide .......................................................................... 23

Rev. 0 | Page 2 of 24

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