Datasheet
ADP2126/ADP2127 Data Sheet
Rev. B | Page 2 of 20
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Typical Applications Circuit............................................................ 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Timing Diagrams.......................................................................... 4
Absolute Maximum Ratings............................................................ 5
Thermal Considerations.............................................................. 5
Thermal Resistance ...................................................................... 5
ESD Caution.................................................................................. 5
Pin Configuration and Function Descriptions............................. 6
Typical Performance Characteristics ............................................. 7
Theory of Operation ...................................................................... 11
Overview...................................................................................... 11
External Clock (EXTCLK) Enable........................................... 11
Spread Spectrum Oscillator ...................................................... 12
Mode Selection ........................................................................... 12
Internal Control Features .......................................................... 12
Protection Features .................................................................... 13
Timing Constraints.................................................................... 13
Applications Information .............................................................. 14
Inductor Selection ...................................................................... 14
Input Capacitor Selection.......................................................... 14
Output Capacitor Selection....................................................... 15
Thermal Considerations............................................................ 15
PCB Layout Guidelines.................................................................. 16
Outline Dimensions....................................................................... 17
Ordering Guide .......................................................................... 18
REVISION HISTORY
3/12—Rev. A to Rev. B
Combined Figure 1 and Figure 2; Renumbered Sequentially..... 1
Changes to Undervoltage Lockout (UVLO) Section,
Added Figure 29, Renumbered Sequentially .............................. 13
Changes to Table 6.......................................................................... 14
Changes to Ordering Guide .......................................................... 18
5/11—Rev. 0 to Rev. A
Changes to Figure 35...................................................................... 17
5/11—Revision 0: Initial Version