ADP2165/ADP2166

Data Sheet

Rev. B | Page 2 of 23

TABLE OF CONTENTS

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

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

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

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

PWM Mode................................................................................. 12

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

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

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

Oscillator and Synchronization ................................................ 12

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

Tracking ....................................................................................... 13

Power-Good (PGOOD)............................................................. 13

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

Overvoltage Protection.............................................................. 13

Undervoltage Lockout ............................................................... 13

Thermal Shutdown .................................................................... 13

Applications Information .............................................................. 14

ADIsimPower Design Tool ....................................................... 14

Input Capacitor Selection.......................................................... 14

Output Voltage Setting .............................................................. 14

Voltage Conversion Limitations............................................... 14

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

Output Capacitor Selection....................................................... 15

Compensation Design ............................................................... 16

Design Example .............................................................................. 17

Output Voltage Setting .............................................................. 17

Frequency Setting....................................................................... 17

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

Output Capacitor Selection....................................................... 18

Compensation Components..................................................... 18

Soft Start Time Program ........................................................... 18

Input Capacitor Selection.......................................................... 18

Recommended External Components .................................... 19

Printed Circuit Board Layout Recommendations ..................... 20

Reference Designs .......................................................................... 21

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

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

REVISION HISTORY

8/2017—Rev. A to Rev. B

Changed LFCSP_WQ to LFCSP..........................................Throughout

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

Changes to Ordering Guide.....................................................................23

9/2016—Rev. 0 to Rev. A

Change to Compensation Components Section ........................ 18

Change to Table 8 ........................................................................... 19

8/2014—Revision 0: Initial Version