Datasheet

ADP3050 Data Sheet
Rev. C | Page 2 of 20
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 4
ESD Caution .................................................................................. 4
Pin Configuration and Function Descriptions ............................. 5
Typical Performance Characteristics ............................................. 6
Theory of Operation ...................................................................... 10
Setting the Output Voltage ........................................................ 10
Applications Information .............................................................. 11
ADIsimPower Design Tool ....................................................... 11
Inductor Selection ...................................................................... 11
Output Capacitor Selection ....................................................... 12
Catch Diode Selection ............................................................... 13
Input Capacitor Selection .......................................................... 14
Discontinous Mode Ringing ..................................................... 14
Setting the Output Voltage ........................................................ 14
Frequency Compensation ......................................................... 14
Current Limit/Frequency Foldback ......................................... 15
Bias Pin Connection .................................................................. 15
Boosted Drive Stage ................................................................... 15
Start-Up/Minimum Input Voltage ........................................... 15
Thermal Considerations ............................................................ 16
Board Layout Guidelines ............................................................... 17
Typical Applications ................................................................... 17
Inverting (Buck Boost) Regulator ............................................ 18
Outline Dimensions ....................................................................... 20
Ordering Guide .......................................................................... 20
REVISION HISTORY
6/12—Re v. B to Rev. C
Change to Features Section ............................................................. 1
Added ADIsimPower Design Tool Section ................................. 11
Changes to Ordering Guide .......................................................... 20
3/08—Rev. A to Rev. B
Updated Format .................................................................. Universal
Changes to General Description Section ...................................... 1
Changes to Figure 3 and Figure 5 ................................................... 6
Changes to Table 2 ............................................................................ 4
Deleted Table 4 ................................................................................ 14
Changes to Table 5 .......................................................................... 15
Deleted Table 8 ................................................................................ 15
Deleted Table 7 ................................................................................ 16
Deleted Table 9 ................................................................................ 16
Changes to Boosted Drive Stage Section and Thermal
Considerations Sections................................................................. 19
Changes to Figure 27 ...................................................................... 20
Changes to Ordering Guide .......................................................... 23