ADP2138/ADP2139

Data Sheet

Rev. C | Page 2 of 20

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 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

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

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

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

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

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

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

Discharge Switch ........................................................................ 12

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

ADIsimPower Design Tool ....................................................... 13

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

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

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

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

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

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

Ordering Guide .......................................................................... 17

REVISION HISTORY

1/13—Rev. B to Rev. C

Change to Figure 18, Caption ........................................................ 8

Change to Figure 28, Caption ....................................................... 10

6/12—Rev. A to Rev. B

Change to Features Section ............................................................. 1

Added ADIsimPower Design Tool Section................................. 13

Changes to Ordering Guide .......................................................... 17

4/11—Rev. 0 to Rev. A

Change to Features Section ............................................................. 1

Added Figure 32, Renumbered Figures Sequentially ................ 10

Changes to Ordering Guide .......................................................... 16

1/11—Revision 0: Initial Version