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ADP2106-1.8-EVAL Datasheet(PDF) 2 Page - Analog Devices |
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ADP2106-1.8-EVAL Datasheet(HTML) 2 Page - Analog Devices |
2 / 32 page ADP2105/ADP2106/ADP2107 Rev. 0 | Page 2 of 32 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Typical Performance Characteristics ............................................. 1 Typical Operating Circuit................................................................ 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 Thermal Resistance ...................................................................... 5 Boundary Condition .................................................................... 5 ESD Caution.................................................................................. 5 Pin Configuration and Function Descriptions............................. 6 Typical Performance Characteristics ............................................. 7 Theory of Operation ...................................................................... 12 Control Scheme .......................................................................... 12 PWM Mode Operation.............................................................. 12 PFM Mode Operation................................................................ 12 Pulse-Skipping Threshold ......................................................... 12 100% Duty Cycle Operation (LDO Mode) ............................. 12 Slope Compensation .................................................................. 13 Features ........................................................................................ 13 Applications Information .............................................................. 15 External Component Selection................................................. 15 Setting the Output Voltage........................................................ 15 Inductor Selection ...................................................................... 16 Output Capacitor Selection....................................................... 17 Input Capacitor Selection.......................................................... 17 Input Filter................................................................................... 18 Soft Start ...................................................................................... 18 Loop Compensation .................................................................. 18 Bode Plots.................................................................................... 19 Load Transient Response .......................................................... 20 Efficiency Considerations ......................................................... 21 Thermal Considerations............................................................ 21 Design Example.......................................................................... 22 External Component Recommendations.................................... 24 Circuit Board Layout Recommendations ................................... 26 Evaluation Board ............................................................................ 27 Evaluation Board Schematic (ADP2107-1.8V)...................... 27 Recommended PCB Board Layout (Evaluation Board Layout)........................................................ 27 Application Circuits ....................................................................... 29 Outline Dimensions ....................................................................... 31 Ordering Guide .......................................................................... 31 REVISION HISTORY 7/06—Revision 0: Initial Version |
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