Datasheet ADP2443 (Analog Devices) - 2

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ADP2443 Data Sheet TABLE OF CONTENTS
Features .. 1 Applications Information .. 15 Applications ... 1 Input Capacitor Selection .. 15 Typical Application Circuit ... 1 Output Voltage Setting .. 15 General Description ... 1 Voltage Conversion Limitations ... 15 Revision History ... 2 Inductor Selection .. 15 Functional Block Diagram .. 3 Output Capacitor Selection... 17 Specifications ... 4 Programming Input Voltage UVLO .. 17 Absolute Maximum Ratings .. 6 Slope Compensation Setting ... 17 Thermal Resistance .. 6 Compensation Design ... 17 ESD Caution .. 6 ADIsimPower Design Tool ... 18 Pin Configuration and Function Descriptions ... 7 Design Example .. 19 Typical Performance Characteristics ... 8 Output Voltage Setting .. 19 Theory of Operation .. 13 Frequency Setting ... 19 Control Scheme .. 13 Inductor Selection .. 19 Precision Enable/Shutdown .. 13 Output Capacitor Selection... 20 Internal Regulator (VREG) ... 13 Slope Compensation Setting ... 20 Bootstrap Circuitry .. 13 Compensation Components ... 20 Oscillator ... 13 Soft Start Time Program ... 20 Synchronization .. 13 Input Capacitor Selection .. 20 Soft Start .. 14 Recommended External Components .. 21 Power Good ... 14 Printed Circuit Board Layout Recommendations ... 22 Peak Current-Limit and Short-Circuit Protection ... 14 Typical Applications Circuits .. 23 Overvoltage Protection (OVP) ... 14 Outline Dimensions ... 24 Undervoltage Lockout (UVLO) ... 14 Ordering Guide .. 24 Thermal Shutdown ... 14
REVISION HISTORY 9/2016—Revision 0: Initial Version
Rev. 0 | Page 2 of 24 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION REVISION HISTORY FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS 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 INPUT VOLTAGE UVLO SLOPE COMPENSATION SETTING COMPENSATION DESIGN ADIsimPOWER DESIGN TOOL DESIGN EXAMPLE OUTPUT VOLTAGE SETTING FREQUENCY SETTING INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION SLOPE COMPENSATION SETTING COMPENSATION COMPONENTS SOFT START TIME PROGRAM INPUT CAPACITOR SELECTION RECOMMENDED EXTERNAL COMPONENTS PRINTED CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATIONS CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE