Datasheet ADP2302, ADP2303 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | 3A, 700KHz NonSynchronous Step-Down DC-DC Switching Regulator |
| 页数 / 页 | 28 / 2 — ADP2302/ADP2303. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. … |
| 修订版 | A |
| 文件格式/大小 | PDF / 1.0 Mb |
| 文件语言 | 英语 |
ADP2302/ADP2303. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. 6/12—Rev. 0 to Rev. A. 7/10—Revision 0: Initial Version
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ADP2302/ADP2303 Data Sheet TABLE OF CONTENTS
Features .. 1 Overvoltage Protection (OVP) ... 15 Applications ... 1 Power Good .. 15 Typical Applications Circuit .. 1 Control Loop ... 15 General Description ... 1 Applications Information .. 16 Revision History ... 2 ADIsimPower Design Tool ... 16 Specifications ... 3 Programming Output Voltage .. 16 Absolute Maximum Ratings .. 4 Voltage Conversion Limitations ... 16 Thermal Resistance .. 4 Low Input Voltage Considerations .. 17 ESD Caution .. 4 Programming the Precision Enable ... 17 Pin Configuration and Function Descriptions ... 5 Inductor ... 17 Typical Performance Characteristics ... 6 Catch Diode .. 18 Functional Block Diagram .. 13 Input Capacitor ... 19 Theory of Operation .. 14 Output Capacitor.. 19 Basic Operation .. 14 Thermal Consideration ... 19 PWM Mode ... 14 Design Example .. 20 Power Saving Mode .. 14 Catch Diode Selection ... 20 Bootstrap Circuitry .. 14 Inductor Selection .. 20 Precision Enable ... 14 Output Capacitor Selection... 20 Integrated Soft Start ... 14 Resistive Voltage Divider Selection .. 20 Current Limit .. 14 Circuit Board Layout Recommendations ... 22 Short-Circuit Protection .. 14 Typical Application Circuits ... 23 Undervoltage Lockout (UVLO) ... 15 Outline Dimensions ... 26 Thermal Shutdown (TSD) ... 15 Ordering Guide .. 26
REVISION HISTORY 6/12—Rev. 0 to Rev. A
Change to Features Section ... 1 Added ADIsimPower Design Tool Section ... 16 Change to Voltage Conversion Limitations Section .. 16 Updated Outline Dimensions ... 26 Changes to Ordering Guide .. 26
7/10—Revision 0: Initial Version
Rev. A | Page 2 of 28 Document Outline Features Applications Typical Applications Circuit General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Functional Block Diagram Theory of Operation Basic Operation PWM Mode Power Saving Mode Bootstrap Circuitry Precision Enable Integrated Soft Start Current Limit Short-Circuit Protection Undervoltage Lockout (UVLO) Thermal Shutdown (TSD) Overvoltage Protection (OVP) Power Good Control Loop Applications Information ADIsimPower Design Tool Programming Output Voltage Voltage Conversion Limitations Low Input Voltage Considerations Programming the Precision Enable Inductor Catch Diode Input Capacitor Output Capacitor Thermal Consideration Design Example Catch Diode Selection Inductor Selection Output Capacitor Selection Resistive Voltage Divider Selection Circuit Board Layout Recommendations Typical Application Circuits Outline Dimensions Ordering Guide
ADP2302/ADP2303 Data Sheet TABLE OF CONTENTS
Features .. 1 Overvoltage Protection (OVP) ... 15 Applications ... 1 Power Good .. 15 Typical Applications Circuit .. 1 Control Loop ... 15 General Description ... 1 Applications Information .. 16 Revision History ... 2 ADIsimPower Design Tool ... 16 Specifications ... 3 Programming Output Voltage .. 16 Absolute Maximum Ratings .. 4 Voltage Conversion Limitations ... 16 Thermal Resistance .. 4 Low Input Voltage Considerations .. 17 ESD Caution .. 4 Programming the Precision Enable ... 17 Pin Configuration and Function Descriptions ... 5 Inductor ... 17 Typical Performance Characteristics ... 6 Catch Diode .. 18 Functional Block Diagram .. 13 Input Capacitor ... 19 Theory of Operation .. 14 Output Capacitor.. 19 Basic Operation .. 14 Thermal Consideration ... 19 PWM Mode ... 14 Design Example .. 20 Power Saving Mode .. 14 Catch Diode Selection ... 20 Bootstrap Circuitry .. 14 Inductor Selection .. 20 Precision Enable ... 14 Output Capacitor Selection... 20 Integrated Soft Start ... 14 Resistive Voltage Divider Selection .. 20 Current Limit .. 14 Circuit Board Layout Recommendations ... 22 Short-Circuit Protection .. 14 Typical Application Circuits ... 23 Undervoltage Lockout (UVLO) ... 15 Outline Dimensions ... 26 Thermal Shutdown (TSD) ... 15 Ordering Guide .. 26
REVISION HISTORY 6/12—Rev. 0 to Rev. A
Change to Features Section ... 1 Added ADIsimPower Design Tool Section ... 16 Change to Voltage Conversion Limitations Section .. 16 Updated Outline Dimensions ... 26 Changes to Ordering Guide .. 26
7/10—Revision 0: Initial Version
Rev. A | Page 2 of 28 Document Outline Features Applications Typical Applications Circuit General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Functional Block Diagram Theory of Operation Basic Operation PWM Mode Power Saving Mode Bootstrap Circuitry Precision Enable Integrated Soft Start Current Limit Short-Circuit Protection Undervoltage Lockout (UVLO) Thermal Shutdown (TSD) Overvoltage Protection (OVP) Power Good Control Loop Applications Information ADIsimPower Design Tool Programming Output Voltage Voltage Conversion Limitations Low Input Voltage Considerations Programming the Precision Enable Inductor Catch Diode Input Capacitor Output Capacitor Thermal Consideration Design Example Catch Diode Selection Inductor Selection Output Capacitor Selection Resistive Voltage Divider Selection Circuit Board Layout Recommendations Typical Application Circuits Outline Dimensions Ordering Guide