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ADP2380 Datasheet(PDF) 2 Page - Analog Devices |
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ADP2380 Datasheet(HTML) 2 Page - Analog Devices |
2 / 28 page ADP2380 Data Sheet Rev. 0 | Page 2 of 28 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Typical Applications Circuit............................................................ 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 Thermal Information................................................................... 5 ESD Caution.................................................................................. 5 Pin Configuration and Function Descriptions............................. 6 Typical Performance Characteristics ............................................. 7 Functional Block Diagram ............................................................ 12 Theory of Operation ...................................................................... 13 Control Scheme .......................................................................... 13 Internal Regulator (VREG)....................................................... 13 Bootstrap Circuitry .................................................................... 13 Low-Side Driver.......................................................................... 13 Oscillator ..................................................................................... 13 Synchronization.......................................................................... 13 Enable and Soft Start.................................................................. 13 Power Good................................................................................. 14 Peak Current-Limit and Short-Circuit Protection................. 14 Overvoltage Protection (OVP)................................................. 14 Undervoltage Lockout (UVLO) ............................................... 14 Thermal Shutdown..................................................................... 14 Applications Information .............................................................. 15 Input Capacitor Selection.......................................................... 15 Output Voltage Setting .............................................................. 15 Voltage Conversion Limitations............................................... 15 Inductor Selection ...................................................................... 15 Output Capacitor Selection....................................................... 17 Low-Side Power Device Selection............................................ 17 Programming Input Voltage UVLO ........................................ 18 Compensation Design ............................................................... 18 ADIsimPower Design Tool ....................................................... 19 Design Example .............................................................................. 20 Output Voltage Setting .............................................................. 20 Frequency Setting....................................................................... 20 Inductor Selection ...................................................................... 20 Output Capacitor Selection....................................................... 20 Low-Side MOSFET Selection ................................................... 21 Compensation Components..................................................... 21 Soft Start Time Program ........................................................... 21 Input Capacitor Selection.......................................................... 21 Recommended External Components ........................................ 22 Circuit Board Layout Recommendations ................................... 24 Typical Applications Circuits........................................................ 26 Outline Dimensions....................................................................... 27 Ordering Guide .......................................................................... 27 REVISION HISTORY 12/12—Revision 0: Initial Version |
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