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 3 link to page 4 link to page 4 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 12 link to page 13 link to page 15 link to page 15 link to page 17 link to page 17 link to page 18 link to page 19 link to page 20 link to page 21 link to page 21 ADP5133Data SheetTABLE OF CONTENTS Features... 1 Theory of Operation.. 12 Applications ... 1 Power Management Unit .. 12 General Description .. 1 BUCK1 and BUCK2 .. 13 Typical Application Circuit ... 1 Applications Information.. 15 Revision History .. 2 Buck External Component Selection ... 15 Specifications ... 3 Power Dissipation and Thermal Considerations .. 17 General Specifications ... 3 Buck Regulator Power Dissipation ... 17 BUCK1 and BUCK2 Specifications.. 4 Junction Temperature.. 18 Input and Output Capacitor, Recommended Specifications .. 4 PCB Layout Guidelines ... 19 Absolute Maximum Ratings ... 5 Typical Application Schematics .. 20 Thermal Resistance ... 5 Outline Dimensions .. 21 ESD Caution... 5 Ordering Guide.. 21 Pin Configuration and Function Descriptions.. 6 Typical Performance Characteristics.. 7 REVISION HISTORY 4/2017—Rev. 0 to Rev. A Changes to Features Section ..1 Changes to Table 3 ..4 Added Figure 30; Renumbered Sequential y ..11 4/2014—Revision 0: Initial Version Rev. A | Page 2 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS GENERAL SPECIFICATIONS BUCK1 AND BUCK2 SPECIFICATIONS INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION POWER MANAGEMENT UNIT Thermal Protection Undervoltage Lockout Enable/Shutdown BUCK1 AND BUCK2 Control Scheme PWM Mode Auto PSM/PWM Operation PSM Current Threshold Oscillator/Phasing of Inductor Switching Short-Circuit Protection Soft Start Current Limit 100% Duty Operation Active Pull-Downs APPLICATIONS INFORMATION BUCK EXTERNAL COMPONENT SELECTION Feedback Resistors Inductor Output Capacitor Input Capacitor POWER DISSIPATION AND THERMAL CONSIDERATIONS BUCK REGULATOR POWER DISSIPATION JUNCTION TEMPERATURE PCB LAYOUT GUIDELINES TYPICAL APPLICATION SCHEMATICS OUTLINE DIMENSIONS ORDERING GUIDE
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