ADP2147

Rev. 0 | Page 2 of 16

TABLE OF CONTENTS

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

 

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

 

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

 

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

 

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

 

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

 

Input and Output Capacitor, Recommended

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

 

Absolute Maximum Ratings............................................................ 4

 

Thermal Data ................................................................................ 4

 

Thermal Resistance ...................................................................... 4

 

ESD Caution.................................................................................. 4

 

Pin Configuration and Function Descriptions............................. 5

 

Typical Performance Characteristics ............................................. 6

 

Theory of Operation ...................................................................... 11

 

Control Scheme .......................................................................... 11

 

PWM Mode................................................................................. 11

 

Power Save Mode........................................................................ 11

 

Enable/Shutdown ....................................................................... 11

 

Simple Dynamic Voltage Scaling (DVS) ................................. 12

 

Short-Circuit Protection............................................................ 12

 

Undervoltage Lockout ............................................................... 12

 

Thermal Protection.................................................................... 12

 

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

 

Current Limit .............................................................................. 12

 

100% Duty Operation................................................................ 12

 

Applications Information .............................................................. 13

 

External Component Selection ................................................ 13

 

Thermal Considerations............................................................ 14

 

PCB Layout Guidelines.............................................................. 14

 

Evaluation Board ............................................................................ 15

 

Evaluation Board Layout........................................................... 15

 

Outline Dimensions ....................................................................... 16

 

Ordering Guide .......................................................................... 16

 

REVISION HISTORY

5/11—Revision 0: Initial Version