Datasheet

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