Datasheet

ADP2116 Data Sheet
Rev. A | Page 2 of 36
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Typical Application Circuit ............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 5
ESD Caution .................................................................................. 5
Pin Configuration and Function Descriptions ............................. 6
Typical Performance Characteristics ............................................. 8
Line and Load Regulation ........................................................... 9
Supply Current ............................................................................ 13
Load Transient Response ........................................................... 14
Basic Functionality ..................................................................... 15
Bode Plots .................................................................................... 18
Simplified Block Diagram ............................................................. 19
Theory of Operation ...................................................................... 20
Control Architecture .................................................................. 20
Undervoltage Lockout (UVLO) ............................................... 20
Enable/Disable Control ............................................................. 20
Soft Start ...................................................................................... 20
Power Good ................................................................................. 21
Pulse Skip Mode ......................................................................... 21
Hiccup Mode Current Limit ..................................................... 22
Thermal Overload Protection .................................................. 22
Maximum Duty Cycle Operation ............................................ 22
Synchronization .......................................................................... 22
Converter Configuration ............................................................... 23
Selecting the Output Voltage .................................................... 23
Setting the Oscillator Frequency .............................................. 24
Synchronization and CLKOUT ................................................ 24
Operation Mode Configuration ............................................... 25
External Components Selection ................................................... 26
ADIsimPower Design Tool ....................................................... 26
Input Capacitor Selection .......................................................... 26
VDD RC Filter ............................................................................ 26
Inductor Selection ...................................................................... 26
Output Capacitor Selection....................................................... 27
Control Loop Compensation .................................................... 28
Design Example .............................................................................. 29
Channel 1 Configuration and Components Selection .......... 29
Channel 2 Configuration and Components Selection .......... 30
System Configuration ................................................................ 31
Application Circuits ....................................................................... 32
Power Dissipation and Thermal Considerations ....................... 34
Circuit Board Layout Recommendations ................................... 35
Outline Dimensions ....................................................................... 36
Ordering Guide .......................................................................... 36
REVISION HISTORY
6/12—Rev. 0 to Rev. A
Changes to Features Section............................................................ 1
Added ADIsimPower Design Tool Section ................................. 26
Updated Outline Dimensions ....................................................... 36
10/09—Revision 0: Initial Version