link to page 3 link to page 4 link to page 4 link to page 5 link to page 6 link to page 9 link to page 9 link to page 9 link to page 10 link to page 10 link to page 10 link to page 10 link to page 11 link to page 11 link to page 11 link to page 12 link to page 13 link to page 15 link to page 15 ADP3051TABLE OF CONTENTS Specifications... 3 Undervoltage Lockout (UVLO) ... 10 Absolute Maximum Ratings.. 4 Short-Circuit Protection and Recovery... 10 ESD Caution.. 4 Applications... 11 Pin Configuration and Function Descriptions... 5 Recommended Components .. 11 Typical Performance Characteristics ... 6 Design Procedure ... 11 Theory of Operation .. 9 Output Capacitor Selection... 12 PWM Control Mode .. 9 Circuit Board Layout Considerations.. 13 Tri-Mode Operation... 9 Outline Dimensions ... 15 100% Duty Cycle Operation ... 10 Ordering Guide .. 15 Shutdown... 10 REVISION HISTORY 6/04—Revision 0: Initial Version Rev. 0 | Page 2 of 16 Document Outline FEATURES APPLICATIONS GENERAL DESCRIP TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION PWM CONTROL MODE TRI-MODE OPERATION 100% DUTY CYCLE OPERATION SHUTDOWN UNDERVOLTAGE LOCKOUT (UVLO) SHORT-CIRCUIT PROTECTION AND RECOVERY APPLICATIONS RECOMMENDED COMPONENTS DESIGN PROCEDURE Setting the Output Voltage Inductor Selection OUTPUT CAPACITOR SELECTION Input Capacitor Selection Compensation Design CIRCUIT BOARD LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE
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