Datasheet ADP2380 (Analog Devices) - 2

link to page 1 link to page 1 link to page 1 link to page 1 link to page 2 link to page 3 link to page 5 link to page 5 link to page 5 link to page 6 link to page 7 link to page 12 link to page 13 link to page 13 link to page 13 link to page 13 link to page 13 link to page 13 link to page 13 link to page 13 link to page 14 link to page 14 link to page 14 link to page 14 link to page 14 link to page 15 link to page 15 link to page 15 link to page 15 link to page 15 link to page 17 link to page 17 link to page 18 link to page 18 link to page 19 link to page 20 link to page 20 link to page 20 link to page 20 link to page 20 link to page 21 link to page 21 link to page 21 link to page 21 link to page 22 link to page 24 link to page 26 link to page 27 link to page 27
ADP2380 Data Sheet TABLE OF CONTENTS
Features .. 1 Applications Information .. 15 Applications ... 1 Input Capacitor Selection .. 15 Typical Applications Circuit .. 1 Output Voltage Setting .. 15 General Description ... 1 Voltage Conversion Limitations ... 15 Revision History ... 2 Inductor Selection .. 15 Specifications ... 3 Output Capacitor Selection... 17 Absolute Maximum Ratings .. 5 Low-Side Power Device Selection .. 17 Thermal Information ... 5 Programming Input Voltage UVLO .. 18 ESD Caution .. 5 Compensation Design ... 18 Pin Configuration and Function Descriptions ... 6 ADIsimPower Design Tool ... 19 Typical Performance Characteristics ... 7 Design Example .. 20 Functional Block Diagram .. 12 Output Voltage Setting .. 20 Theory of Operation .. 13 Frequency Setting ... 20 Control Scheme .. 13 Inductor Selection .. 20 Internal Regulator (VREG) ... 13 Output Capacitor Selection... 20 Bootstrap Circuitry .. 13 Low-Side MOSFET Selection ... 21 Low-Side Driver .. 13 Compensation Components ... 21 Oscillator ... 13 Soft Start Time Program ... 21 Synchronization .. 13 Input Capacitor Selection .. 21 Enable and Soft Start .. 13 Recommended External Components .. 22 Power Good ... 14 Circuit Board Layout Recommendations ... 24 Peak Current-Limit and Short-Circuit Protection ... 14 Typical Applications Circuits .. 26 Overvoltage Protection (OVP) ... 14 Outline Dimensions ... 27 Undervoltage Lockout (UVLO) ... 14 Ordering Guide .. 27 Thermal Shutdown ... 14
REVISION HISTORY 12/12—Revision 0: Initial Version
Rev. 0 | Page 2 of 28 Document Outline Features Applications Typical Applications Circuit General Description Revision History Specifications Absolute Maximum Ratings Thermal Information ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Functional Block Diagram Theory of Operation Control Scheme Internal Regulator (VREG) Bootstrap Circuitry Low-Side Driver Oscillator Synchronization Enable and Soft Start Power Good Peak Current-Limit and Short-Circuit Protection Overvoltage Protection (OVP) Undervoltage Lockout (UVLO) Thermal Shutdown Applications Information Input Capacitor Selection Output Voltage Setting Voltage Conversion Limitations Inductor Selection Output Capacitor Selection Low-Side Power Device Selection Programming Input Voltage UVLO Compensation Design Compensation Network Between COMP and GND Compensation Network Between COMP and FB ADIsimPower Design Tool Design Example Output Voltage Setting Frequency Setting Inductor Selection Output Capacitor Selection Low-Side MOSFET Selection Compensation Components Soft Start Time Program Input Capacitor Selection Recommended External Components Circuit Board Layout Recommendations Typical Applications Circuits Outline Dimensions Ordering Guide