Datasheet ADP2102 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | Low Duty Cycle, 600 mA, 3 MHz Synchronous Step-Down DC-to-DC Converter |
| 页数 / 页 | 24 / 2 — ADP2102. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY 7/2016—Rev. B to … |
| 修订版 | C |
| 文件格式/大小 | PDF / 747 Kb |
| 文件语言 | 英语 |
ADP2102. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY 7/2016—Rev. B to Rev. C. 9/2007—Rev. A to Rev. B
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ADP2102 Data Sheet TABLE OF CONTENTS
Features .. 1 Soft Start .. 15 Applications ... 1 Enable... 15 General Description ... 1 Undervoltage Lockout ... 15 Typical Application Circuit ... 1 Thermal Shutdown .. 15 Revision History ... 2 Applications Information .. 16 Specifications ... 3 Inductor Selection .. 16 Absolute Maximum Ratings .. 4 Input Capacitor Selection .. 16 Thermal Resistance .. 4 Output Capacitor Selection... 16 Boundary Condition .. 4 Typical Application Circuits ... 17 ESD Caution .. 4 Setting the Output Voltage .. 19 Pin Configuration and Function Descriptions ... 5 Efficiency Considerations ... 19 Typical Performance Characteristics ... 6 Thermal Considerations .. 20 Theory of Operation .. 13 Design Example .. 20 Control Scheme .. 13 Circuit Board Layout Recommendations ... 22 Constant On-Time Timer ... 13 Recommended Layout ... 22 Forced Continuous Conduction Mode ... 13 Outline Dimensions ... 24 Power Save Mode .. 13 Ordering Guide .. 24 Synchronous Rectification .. 14 Current Limit .. 14
REVISION HISTORY 7/2016—Rev. B to Rev. C 9/2007—Rev. A to Rev. B
Changed ADP2102-ADJ to ADP2102 Adjustable Output Changes to Features Section, Applications Section, and General Voltage Options, ADP2102-FXD to ADP2102 Fixed Output Description Section ... 1 Voltage Options, ADP2102-xx to ADP2102 Fixed Output Changes to Table 4 ... 5 Voltage Options, and CP-8-2 to CP-8-13 ... Throughout Changes to Table 6 .. 17 Moved Figure 1; Renumbered Sequential y .. 1 Changes to Table 7 .. 19 Changes to Features Section, General Description Section, and Changes to Circuit Board Layout Recommendations Section .. 21 Figure 1 .. 1 Updated Outline Dimensions ... 23 Added Figure 2 Caption... 1 Changes to Ordering Guide .. 23 Changes to Table 1 .. 3 Changes to Figure 3 and Table 4 ... 5
6/2007—Rev. 0 to Rev. A
Changes to Figure 47 and Figure 48 ... 17 Changes to Ordering Guide .. 23 Changes to Figure 49 and Figure 50 ... 18 Changes to Table 7 .. 19
6/2007—Revision 0: Initial Version
Updated Outline Dimensions ... 24 Changes to Ordering Guide .. 24 Rev. C | Page 2 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE BOUNDARY CONDITION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CONTROL SCHEME CONSTANT ON-TIME TIMER FORCED CONTINUOUS CONDUCTION MODE POWER SAVE MODE SYNCHRONOUS RECTIFICATION CURRENT LIMIT SOFT START ENABLE UNDERVOLTAGE LOCKOUT THERMAL SHUTDOWN APPLICATIONS INFORMATION INDUCTOR SELECTION INPUT CAPACITOR SELECTION OUTPUT CAPACITOR SELECTION TYPICAL APPLICATION CIRCUITS SETTING THE OUTPUT VOLTAGE EFFICIENCY CONSIDERATIONS Power Switch Conduction Losses Inductor Losses Switching Losses Transition Losses THERMAL CONSIDERATIONS DESIGN EXAMPLE Inductor Output Capacitor Input Capacitor Losses CIRCUIT BOARD LAYOUT RECOMMENDATIONS RECOMMENDED LAYOUT OUTLINE DIMENSIONS ORDERING GUIDE
ADP2102 Data Sheet TABLE OF CONTENTS
Features .. 1 Soft Start .. 15 Applications ... 1 Enable... 15 General Description ... 1 Undervoltage Lockout ... 15 Typical Application Circuit ... 1 Thermal Shutdown .. 15 Revision History ... 2 Applications Information .. 16 Specifications ... 3 Inductor Selection .. 16 Absolute Maximum Ratings .. 4 Input Capacitor Selection .. 16 Thermal Resistance .. 4 Output Capacitor Selection... 16 Boundary Condition .. 4 Typical Application Circuits ... 17 ESD Caution .. 4 Setting the Output Voltage .. 19 Pin Configuration and Function Descriptions ... 5 Efficiency Considerations ... 19 Typical Performance Characteristics ... 6 Thermal Considerations .. 20 Theory of Operation .. 13 Design Example .. 20 Control Scheme .. 13 Circuit Board Layout Recommendations ... 22 Constant On-Time Timer ... 13 Recommended Layout ... 22 Forced Continuous Conduction Mode ... 13 Outline Dimensions ... 24 Power Save Mode .. 13 Ordering Guide .. 24 Synchronous Rectification .. 14 Current Limit .. 14
REVISION HISTORY 7/2016—Rev. B to Rev. C 9/2007—Rev. A to Rev. B
Changed ADP2102-ADJ to ADP2102 Adjustable Output Changes to Features Section, Applications Section, and General Voltage Options, ADP2102-FXD to ADP2102 Fixed Output Description Section ... 1 Voltage Options, ADP2102-xx to ADP2102 Fixed Output Changes to Table 4 ... 5 Voltage Options, and CP-8-2 to CP-8-13 ... Throughout Changes to Table 6 .. 17 Moved Figure 1; Renumbered Sequential y .. 1 Changes to Table 7 .. 19 Changes to Features Section, General Description Section, and Changes to Circuit Board Layout Recommendations Section .. 21 Figure 1 .. 1 Updated Outline Dimensions ... 23 Added Figure 2 Caption... 1 Changes to Ordering Guide .. 23 Changes to Table 1 .. 3 Changes to Figure 3 and Table 4 ... 5
6/2007—Rev. 0 to Rev. A
Changes to Figure 47 and Figure 48 ... 17 Changes to Ordering Guide .. 23 Changes to Figure 49 and Figure 50 ... 18 Changes to Table 7 .. 19
6/2007—Revision 0: Initial Version
Updated Outline Dimensions ... 24 Changes to Ordering Guide .. 24 Rev. C | Page 2 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE BOUNDARY CONDITION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CONTROL SCHEME CONSTANT ON-TIME TIMER FORCED CONTINUOUS CONDUCTION MODE POWER SAVE MODE SYNCHRONOUS RECTIFICATION CURRENT LIMIT SOFT START ENABLE UNDERVOLTAGE LOCKOUT THERMAL SHUTDOWN APPLICATIONS INFORMATION INDUCTOR SELECTION INPUT CAPACITOR SELECTION OUTPUT CAPACITOR SELECTION TYPICAL APPLICATION CIRCUITS SETTING THE OUTPUT VOLTAGE EFFICIENCY CONSIDERATIONS Power Switch Conduction Losses Inductor Losses Switching Losses Transition Losses THERMAL CONSIDERATIONS DESIGN EXAMPLE Inductor Output Capacitor Input Capacitor Losses CIRCUIT BOARD LAYOUT RECOMMENDATIONS RECOMMENDED LAYOUT OUTLINE DIMENSIONS ORDERING GUIDE