Datasheet

ADP2109 Data Sheet
Rev. B | 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 Resistance ...................................................................... 4
ESD Caution .................................................................................. 4
Pin Configuration and Function Descriptions ............................. 5
Typical Performance Characteristics ............................................. 6
Theory of Operation ...................................................................... 10
Control Scheme .......................................................................... 10
PWM Mode ................................................................................. 10
Power Save Mode ........................................................................ 10
Enable/Shutdown ....................................................................... 11
Discharge Switch ........................................................................ 11
Short-Circuit Protection............................................................ 11
Undervoltage Lockout ............................................................... 11
Thermal Protection .................................................................... 11
Soft Start ...................................................................................... 11
Current Limit .............................................................................. 11
100% Duty Operation ................................................................ 11
Applications Information .............................................................. 12
ADIsimPower Design Tool ....................................................... 12
External Component Selection ................................................ 12
Thermal Considerations ............................................................ 13
PCB Layout Guidelines.............................................................. 13
Evaluation Board ............................................................................ 14
Outline Dimensions ....................................................................... 15
Ordering Guide .......................................................................... 15
REVISION HISTORY
7/12—Rev. A to Rev B
Changes to Features Section............................................................. 1
Added ADIsimPower Design Tool Section .................................. 12
4/10—Rev. 0 to Rev. A
Changes to Ordering Guide .......................................................... 15
4/09—Revision 0: Initial Version