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參數(shù)資料
| 型號： | ADP3025 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | High Efficiency Dual Output Power Supply Controller |
| 中文描述： | 高效率雙輸出電源控制器 |
| 文件頁數(shù)： | 2/24頁 |
| 文件大小： | 609K |
| 代理商： | ADP3025 |
ADP3025
TABLE OF CONTENTS
Specifications.....................................................................................3
Rev. A | Page 2 of 24
Absolute Maximum Ratings............................................................5
ESD Caution..................................................................................5
Pin Configuration and Function Descriptions.............................6
Typical Performance Characteristics.............................................9
Theory of Operation......................................................................11
Internal 5 V Supply (INTVCC)................................................11
Reference (REF)..........................................................................11
Boosted High-Side Gate Drive Supply (BST).........................11
Synchronous Rectifier (DRVL) ................................................11
Oscillator Frequency and Synchronization (SYNC)..............11
Shutdown SD...............................................................................11
Soft Start and Power-Up Sequencing (SS) ..............................11
Current Limiting (CLSET)........................................................12
Output Undervoltage Protection..............................................12
Output Overvoltage and Reverse Voltage Protection............12
Power Good Output (PWRGD)...............................................12
Linear Regulator Controller......................................................12
Output Voltage Adjustment...................................................... 13
Application Information ........................................................... 13
Input Voltage Range................................................................... 13
Maximum Output Current and MOSFET Selection............. 14
Nominal Inductor Value............................................................ 15
Inductor Selection...................................................................... 15
C
IN
and C
OUT
Selection............................................................... 16
Power MOSFET Selection......................................................... 16
Soft Start...................................................................................... 17
Fixed or Adjustable Output Voltage......................................... 17
Efficiency Enhancement............................................................ 17
Transient Response Considerations......................................... 18
Feedback Loop Compensation................................................. 18
Compensation Loop Design and Test Method...................... 19
Recommended Applications..................................................... 19
Layout Considerations............................................................... 19
Outline Dimensions....................................................................... 21
Ordering Guide .......................................................................... 21
REVISION HISTORY
Revision A
4/04—Data Sheet changed from Rev. 0 to Rev. A
Change
Page
Changes to Features...................................................................... 1
Changes to Specifications............................................................ 3
Changes to Figures 4 and 5.......................................................... 9
Changes to Theory of Operation section................................11
Changes to Output Voltage Adjustment section ....................13
Changes to Table 5......................................................................13
Changes to Table 6......................................................................15
Changes to Table 8......................................................................16
Changes to Table 9......................................................................17
1/04—Revision 0: Initial Version
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