ADP2102-1.8-EVALZ【PDF 2/24 页】BOARD EVAL FOR ADP2102-1.8

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ADP2102

TABLE OF CONTENTS

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

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

General Description ......................................................................... 1

Typical Performance Characteristics ............................................. 1

Typical Applications Circuit............................................................ 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Absolute Maximum Ratings............................................................ 4

Thermal Resistance ...................................................................... 4

Boundary Condition.................................................................... 4

ESD Caution.................................................................................. 4

Pin Configuration and Function Descriptions............................. 5

Typical Performance Characteristics ............................................. 6

Theory of Operation ...................................................................... 13

Control Scheme .......................................................................... 13

Constant On-Time Timer ......................................................... 13

Forced Continuous Conduction Mode ................................... 13

Power Save Mode........................................................................ 13

Synchronous Rectification ........................................................ 14

REVISION HISTORY

9/07—Rev. A to Rev. B

Changes to Features, Applications, and General Description .... 1

Changes to Table 4............................................................................ 5

Current Limit .............................................................................. 14

Soft Start ...................................................................................... 15

Enable........................................................................................... 15

Undervoltage Lockout ............................................................... 15

Thermal Shutdown .................................................................... 15

Applications Information .............................................................. 16

Inductor Selection ...................................................................... 16

Input Capacitor Selection.......................................................... 16

Output Capacitor Selection....................................................... 16

Typical Applications Circuits.................................................... 17

Setting the Output Voltage........................................................ 19

Efficiency Considerations ......................................................... 19

Thermal Considerations............................................................ 20

Design Example.......................................................................... 20

Circuit Board Layout Recommendations ................................... 22

Recommended Layout............................................................... 22

Outline Dimensions ....................................................................... 24

Ordering Guide .......................................................................... 24

6/07—Rev. 0 to Rev. A

Changes to Ordering Guide .......................................................... 23

6/07—Revision 0: Initial Version

Changes to Table 6.......................................................................... 17

Changes to Table 7.......................................................................... 19

Changes to Circuit Board Layout Recommendations Section.... 21

Updated Outline Dimensions ....................................................... 23

Changes to Ordering Guide .......................................................... 23

Rev. B | Page 2 of 24

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