ADP122/ADP123
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Theory of Operation ...................................................................... 11
Applications Information .............................................................. 12
Capacitor Selection .................................................................... 12
Undervoltage Lockout ............................................................... 13
Enable Feature ............................................................................ 13
Current Limit and Thermal Overload Protection ................. 14
Thermal Considerations............................................................ 14
Junction Temperature Calculations For TSOT Package....... 15
Junction Temperature Calculations For LFCSP Package...... 17
Printed Circuit Board Layout Considerations........................ 19
Outline Dimensions....................................................................... 20
Ordering Guide .......................................................................... 21
Applications....................................................................................... 1
General Description ......................................................................... 1
Typical Application Circuits............................................................ 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Recommended Specifications..................................................... 4
Absolute Maximum Ratings............................................................ 5
Thermal Data ................................................................................ 5
Thermal Resistance ...................................................................... 5
ESD Caution.................................................................................. 5
Pin Configurations and Function Descriptions ........................... 6
Typical Performance Characteristics ............................................. 7
REVISION HISTORY
6/12—Rev. D to Rev. E
Added 6-Lead LFCSP Package .................................... Throughout
Added Figure 3 and Figure 4 (Renumbered Sequentially) ..........1
Changes to Table 4.............................................................................5
Changes to Pin Configuration and Function Descriptions
Changes to Table 3.............................................................................5
4/12—Rev. C to Rev. D
Changes to Ordering Guide ...........................................................21
4/12—Rev. B to Rev. C
Section.................................................................................................6
Changes to Thermal Considerations Section ............................. 14
Added Junction Temperature Calculations for LFCSP Package
Section.............................................................................................. 17
Updated Outline Dimensions ...................................................... 20
Changes to Ordering Guide.......................................................... 21
Changes to Operating Ambient Temperature Range;
Table 3 .................................................................................................5
3/12—Rev. A to Rev. B
Added VOUT = 2.8 V to Figure 23 Caption......................................9
Updated Outline Dimensions .......................................................20
10/09—Revision 0: Initial Version
6/11—Rev. 0 to Rev. A
Rev. E | Page 2 of 24