Datasheet ADP2384 (Analog Devices) - 2

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ADP2384 Data Sheet TABLE OF CONTENTS
Features .. 1 Thermal Shutdown .. 14 Applications ... 1 Applications Information .. 15 Typical Applications Circuit .. 1 Input Capacitor Selection .. 15 General Description ... 1 Output Voltage Setting .. 15 Revision History ... 2 Voltage Conversion Limitations ... 15 Specifications ... 3 Inductor Selection .. 15 Absolute Maximum Ratings .. 5 Output Capacitor Selection... 16 Thermal Resistance .. 5 Programming the Input Voltage UVLO .. 17 ESD Caution .. 5 Compensation Design ... 17 Pin Configuration and Function Descriptions ... 6 ADIsimPower Design Tool ... 18 Typical Performance Characteristics ... 7 Design Example .. 19 Functional Block Diagram .. 11 Output Voltage Setting (Design Example) .. 19 Theory of Operation .. 12 Frequency Setting ... 19 Control Scheme .. 12 Inductor Selection (Design Example) ... 19 Precision Enable/Shutdown .. 12 Output Capacitor Selection (Design Example) .. 20 Internal Regulator (VREG) ... 12 Compensation Components ... 20 Bootstrap Circuitry .. 12 Soft Start Time Program ... 20 Oscillator ... 12 Input Capacitor Selection (Design Example) ... 20 Synchronization .. 12 Recommended External Components .. 21 Soft Start .. 13 Circuit Board Layout Recommendations ... 22 Power Good ... 13 Typical Applications Circuits .. 23 Peak Current-Limit and Short-Circuit Protection ... 13 Outline Dimensions ... 24 Overvoltage Protection (OVP) ... 14 Ordering Guide .. 24 Undervoltage Lockout (UVLO) ... 14
REVISION HISTORY 7/14—Rev. 0 to Rev. A
Changes to Table 2 and Table 3 ... 5 Changes to Inductor Selection Section .. 15 Changes to Compensation Components Section... 20 Updated Outline Dimensions ... 24
8/12—Revision 0: Initial Version
Rev. A | Page 2 of 24 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATIONS CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS FUNCTIONAL BLOCK DIAGRAM THEORY OF OPERATION CONTROL SCHEME PRECISION ENABLE/SHUTDOWN INTERNAL REGULATOR (VREG) BOOTSTRAP CIRCUITRY OSCILLATOR SYNCHRONIZATION 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 PROGRAMMING THE INPUT VOLTAGE UVLO COMPENSATION DESIGN ADIsimPower DESIGN TOOL DESIGN EXAMPLE OUTPUT VOLTAGE SETTING (DESIGN EXAMPLE) FREQUENCY SETTING INDUCTOR SELECTION (DESIGN EXAMPLE) OUTPUT CAPACITOR SELECTION (DESIGN EXAMPLE) COMPENSATION COMPONENTS SOFT START TIME PROGRAM INPUT CAPACITOR SELECTION (DESIGN EXAMPLE) RECOMMENDED EXTERNAL COMPONENTS CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATIONS CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE