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ADP2302-EVALZ Arkusz danych(PDF) 2 Page - Analog Devices |
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ADP2302-EVALZ Arkusz danych(HTML) 2 Page - Analog Devices |
2 / 28 page ADP2302/ADP2303 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............................................................ 4 Thermal Resistance ...................................................................... 4 ESD Caution.................................................................................. 4 Pin Configuration and Function Descriptions............................. 5 Typical Performance Characteristics ............................................. 6 Functional Block Diagram ............................................................ 13 Theory of Operation ...................................................................... 14 Basic Operation .......................................................................... 14 PWM Mode................................................................................. 14 Power Saving Mode.................................................................... 14 Bootstrap Circuitry .................................................................... 14 Precision Enable ......................................................................... 14 Integrated Soft Start ................................................................... 14 Current Limit .............................................................................. 14 Short-Circuit Protection............................................................ 14 Undervoltage Lockout (UVLO) ............................................... 15 Thermal Shutdown (TSD)......................................................... 15 Overvoltage Protection (OVP)................................................. 15 Power Good ................................................................................ 15 Control Loop............................................................................... 15 Applications Information .............................................................. 16 Programming Output Voltage .................................................. 16 Voltage Conversion Limitations............................................... 16 Low Input Voltage Considerations .......................................... 17 Programming the Precision Enable ......................................... 17 Inductor ....................................................................................... 17 Catch Diode ................................................................................ 18 Input Capacitor........................................................................... 19 Output Capacitor........................................................................ 19 Thermal Consideration ............................................................. 19 Design Example .............................................................................. 20 Catch Diode Selection ............................................................... 20 Inductor Selection ...................................................................... 20 Output Capacitor Selection....................................................... 20 Resistive Voltage Divider Selection.......................................... 20 Circuit Board Layout Recommendations ................................... 22 Typical Application Circuits ......................................................... 23 Outline Dimensions ....................................................................... 26 Ordering Guide .......................................................................... 26 REVISION HISTORY 7/10—Revision 0: Initial Version |
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