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ADP1829ACPZ-R7 Datasheet(PDF) 2 Page - Analog Devices |
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ADP1829ACPZ-R7 Datasheet(HTML) 2 Page - Analog Devices |
2 / 32 page ADP1829 Rev. 0 | Page 2 of 32 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Typical Application Circuit ............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Functional Block Diagram .............................................................. 6 Pin Configuration and Function Descriptions............................. 7 Typical Performance Characteristics ............................................. 9 Theory of Operation ...................................................................... 13 Input Power ................................................................................. 13 Start-Up Logic............................................................................. 13 Internal Linear Regulator .......................................................... 13 Oscillator and Synchronization ................................................ 13 Error Amplifier ........................................................................... 14 Soft Start ...................................................................................... 14 Power OK Indicator ................................................................... 14 Tracking ....................................................................................... 14 MOSFET Drivers........................................................................ 15 Current Limit .............................................................................. 15 Applications Information .............................................................. 16 Selecting the Input Capacitor ................................................... 16 Selecting the MOSFETs ............................................................. 17 Setting the Current Limit .......................................................... 18 Feedback Voltage Divider ......................................................... 18 Compensating the Voltage Mode Buck Regulator................. 19 Soft Start ...................................................................................... 22 Voltage Tracking......................................................................... 22 Coincident Tracking .................................................................. 23 Ratiometric Tracking ................................................................. 23 Thermal Considerations............................................................ 24 PCB Layout Guidelines.................................................................. 25 LFCSP Package Considerations................................................ 26 Application Circuits ....................................................................... 27 Outline Dimensions ....................................................................... 29 Ordering Guide .......................................................................... 29 REVISION HISTORY 6/07—Revision 0: Initial Version |
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