ADP2387

Data Sheet

Rev. C | Page 2 of 25

TABLE OF CONTENTS

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

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

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

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

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

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

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

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

Soft Start ...................................................................................... 12

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

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

Overvoltage Protection (OVP)................................................. 13

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

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

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

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

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

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

Inductor Selection ...................................................................... 16

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

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

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

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

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

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

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

Current-Limit Threshold Setting............................................. 19

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

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

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

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

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

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

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

Typical Applications Circuits........................................................ 24

Outline Dimensions....................................................................... 25

Ordering Guide .......................................................................... 25

REVISION HISTORY

4/2017—Rev. B to Rev. C

Added Maximum Junction Temperature Parameter, Table 2 ....... 6

1/2016—Revision B: Initial Version