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XFL4020-472ME Datasheet(PDF) 2 Page - Analog Devices |
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XFL4020-472ME Datasheet(HTML) 2 Page - Analog Devices |
2 / 32 page ADP2370/ADP2371 Data Sheet Rev. A | Page 2 of 32 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Typical Application Circuit ............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Recommended Specifications: Capacitors ................................ 5 Absolute Maximum Ratings ....................................................... 6 Thermal Data ................................................................................ 6 Thermal Resistance ...................................................................... 6 ESD Caution.................................................................................. 6 Pin Configuration and Function Descriptions............................. 7 Typical Performance Characteristics ............................................. 8 Buck Output .................................................................................. 8 Theory of Operation ...................................................................... 20 PWM Operation......................................................................... 20 PSM Operation ........................................................................... 21 Features Descriptions..................................................................... 22 Precision Enable ......................................................................... 22 Forced PWM or PWM/PSM Selection.................................... 22 Quick Output Discharge (QOD) Function............................. 22 Short-Circuit Protection............................................................ 22 Undervoltage Lockout ............................................................... 22 Thermal Protection.................................................................... 22 Soft Start ...................................................................................... 22 Current Limit .............................................................................. 22 100% Duty Cycle ........................................................................ 23 Synchronizing ............................................................................. 23 Power Good ................................................................................ 24 Applications Information .............................................................. 25 ADIsimPower Design Tool ....................................................... 25 External Component Selection ................................................ 25 Selecting the Inductor................................................................ 25 Output Capacitor........................................................................ 25 Input Capacitor........................................................................... 25 Adjustable Output Voltage Programming .............................. 25 Efficiency..................................................................................... 26 Recommended Buck External Components .......................... 26 Capacitor Selection .................................................................... 28 Thermal Considerations................................................................ 29 PCB Layout Considerations...................................................... 30 Packaging and Ordering Information ......................................... 32 Outline Dimensions................................................................... 32 Ordering Guide .......................................................................... 32 REVISION HISTORY 5/12—Rev. 0 to Rev. A Changed Voltage Range for SW to PGND and Ground Plane from −0.3 V to VIN + 0.3 V to −0.7 V to VIN + 0.3 V ............... 6 Changes to Ordering Guide .......................................................... 32 4/12—Revision 0: Initial Version |
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