Datasheet

ADP122/ADP123 Data Sheet
Rev. E | Page 2 of 24
TABLE OF CONTENTS
Features .............................................................................................. 1
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
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
REVISION HISTORY
6/12—Rev. D to Rev. E
Changes to Table 3 ............................................................................. 5
4/12—Rev. C to Rev. D
Changes to Ordering Guide ........................................................... 21
4/12—Rev. B to Rev. C
Changes to Operating Ambient Temperature Range;
Table 3 ................................................................................................. 5
3/12—Rev. A to Rev. B
Added V
OUT
= 2.8 V to Figure 23 Caption...................................... 9
Updated Outline Dimensions ....................................................... 20
6/11—Rev. 0 to Rev. A
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
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
10/09—Revision 0: Initial Version