Datasheet ADP3050 (Analog Devices) - 2
| Hersteller | Analog Devices |
| Beschreibung | 200 kHz, 1 A Step-Down High-Voltage Switching Regulator |
| Seiten / Seite | 20 / 2 — ADP3050. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY 6/12—Rev. B to … |
| Revision | C |
| Dateiformat / Größe | PDF / 356 Kb |
| Dokumentensprache | Englisch |
ADP3050. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY 6/12—Rev. B to Rev. C. 3/08—Rev. A to Rev. B
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ADP3050 Data Sheet TABLE OF CONTENTS
Features .. 1 Catch Diode Selection ... 13 Applications ... 1 Input Capacitor Selection .. 14 Functional Block Diagram .. 1 Discontinous Mode Ringing ... 14 General Description ... 1 Setting the Output Voltage .. 14 Revision History ... 2 Frequency Compensation ... 14 Specifications ... 3 Current Limit/Frequency Foldback ... 15 Absolute Maximum Ratings .. 4 Bias Pin Connection .. 15 ESD Caution .. 4 Boosted Drive Stage ... 15 Pin Configuration and Function Descriptions ... 5 Start-Up/Minimum Input Voltage ... 15 Typical Performance Characteristics ... 6 Thermal Considerations .. 16 Theory of Operation .. 10 Board Layout Guidelines ... 17 Setting the Output Voltage .. 10 Typical Applications ... 17 Applications Information .. 11 Inverting (Buck Boost) Regulator .. 18 ADIsimPower Design Tool ... 11 Outline Dimensions ... 20 Inductor Selection .. 11 Ordering Guide .. 20 Output Capacitor Selection ... 12
REVISION HISTORY 6/12—Rev. B to Rev. C
Change to Features Section ... 1 Added ADIsimPower Design Tool Section ... 11 Changes to Ordering Guide .. 20
3/08—Rev. A to Rev. B
Updated Format .. Universal Changes to General Description Section .. 1 Changes to Figure 3 and Figure 5 ... 6 Changes to Table 2 .. 4 Deleted Table 4 .. 14 Changes to Table 5 .. 15 Deleted Table 8 .. 15 Deleted Table 7 .. 16 Deleted Table 9 .. 16 Changes to Boosted Drive Stage Section and Thermal Considerations Sections... 19 Changes to Figure 27 .. 20 Changes to Ordering Guide .. 23 Rev. C | Page 2 of 20 Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Setting the Output Voltage Applications Information ADIsimPower Design Tool Inductor Selection Continuous Mode Discontinuous Mode Inductor Core Types and Materials Choosing an Inductor Output Capacitor Selection Choosing an Output Capacitor Catch Diode Selection Choosing a Catch Diode Input Capacitor Selection Discontinous Mode Ringing Setting the Output Voltage Frequency Compensation Current Limit/Frequency Foldback Bias Pin Connection Boosted Drive Stage Start-Up/Minimum Input Voltage Thermal Considerations Board Layout Guidelines Typical Applications 5 V to 3.3 V Buck (Step-Down) Regulator Inverting (Buck Boost) Regulator Dual Output SEPIC Regulator Outline Dimensions Ordering Guide
ADP3050 Data Sheet TABLE OF CONTENTS
Features .. 1 Catch Diode Selection ... 13 Applications ... 1 Input Capacitor Selection .. 14 Functional Block Diagram .. 1 Discontinous Mode Ringing ... 14 General Description ... 1 Setting the Output Voltage .. 14 Revision History ... 2 Frequency Compensation ... 14 Specifications ... 3 Current Limit/Frequency Foldback ... 15 Absolute Maximum Ratings .. 4 Bias Pin Connection .. 15 ESD Caution .. 4 Boosted Drive Stage ... 15 Pin Configuration and Function Descriptions ... 5 Start-Up/Minimum Input Voltage ... 15 Typical Performance Characteristics ... 6 Thermal Considerations .. 16 Theory of Operation .. 10 Board Layout Guidelines ... 17 Setting the Output Voltage .. 10 Typical Applications ... 17 Applications Information .. 11 Inverting (Buck Boost) Regulator .. 18 ADIsimPower Design Tool ... 11 Outline Dimensions ... 20 Inductor Selection .. 11 Ordering Guide .. 20 Output Capacitor Selection ... 12
REVISION HISTORY 6/12—Rev. B to Rev. C
Change to Features Section ... 1 Added ADIsimPower Design Tool Section ... 11 Changes to Ordering Guide .. 20
3/08—Rev. A to Rev. B
Updated Format .. Universal Changes to General Description Section .. 1 Changes to Figure 3 and Figure 5 ... 6 Changes to Table 2 .. 4 Deleted Table 4 .. 14 Changes to Table 5 .. 15 Deleted Table 8 .. 15 Deleted Table 7 .. 16 Deleted Table 9 .. 16 Changes to Boosted Drive Stage Section and Thermal Considerations Sections... 19 Changes to Figure 27 .. 20 Changes to Ordering Guide .. 23 Rev. C | Page 2 of 20 Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Setting the Output Voltage Applications Information ADIsimPower Design Tool Inductor Selection Continuous Mode Discontinuous Mode Inductor Core Types and Materials Choosing an Inductor Output Capacitor Selection Choosing an Output Capacitor Catch Diode Selection Choosing a Catch Diode Input Capacitor Selection Discontinous Mode Ringing Setting the Output Voltage Frequency Compensation Current Limit/Frequency Foldback Bias Pin Connection Boosted Drive Stage Start-Up/Minimum Input Voltage Thermal Considerations Board Layout Guidelines Typical Applications 5 V to 3.3 V Buck (Step-Down) Regulator Inverting (Buck Boost) Regulator Dual Output SEPIC Regulator Outline Dimensions Ordering Guide