ADP2126/ADP2127

Rev. A | Page 2 of 20

TABLE OF CONTENTS

Features .............................................................................................. 1

 

Applications....................................................................................... 1

 

Typical Application Circuits............................................................ 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

5/11—Rev. 0 to Rev. A

Changes to Figure 35...................................................................... 17

5/11—Revision 0: Initial Version