Datasheet ADP5043 (Analog Devices) - 2

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ADP5043 Data Sheet TABLE OF CONTENTS
Features .. 1 Power Management Unit ... 16 General Description ... 1 Buck Section .. 17 High Level Block Diagram .. 1 LDO Section ... 18 Revision History ... 2 Supervisory Section ... 18 Specifications ... 3 Applications Information .. 21 General Specifications ... 3 Buck External Component Selection ... 21 Supervisory Specifications .. 3 LDO Capacitor Selection .. 22 Buck Specifications ... 5 Supervisory Section ... 23 LDO Specifications .. 5 PCB Layout Guidelines .. 24 Input and Output Capacitor, Recommended Specifications .. 6 Power Dissipation/Thermal Considerations ... 25 Absolute Maximum Ratings .. 7 Evaluation Board Schematics and Artwork .. 27 Thermal Data .. 7 Suggested Layout .. 27 Thermal Resistance .. 7 Bill of Materials ... 28 ESD Caution .. 7 Application Diagram ... 28 Pin Configuration and Function Descriptions ... 8 Factory Programmable Options ... 29 Typical Performance Characteristics ... 9 Outline Dimensions ... 30 Theory of Operation .. 16 Ordering Guide .. 30
REVISION HISTORY 5/2018—Rev. A to Rev. B
Updated Outline Dimensions ... 30 Changes to Ordering Guide .. 30
10/2011—Rev. 0 to Rev. A
Updated Outline Dimensions ... 30 Changes to Ordering Guide .. 30
4/2011—Revision 0: Initial Version
Rev. B | Page 2 of 30 Document Outline FEATURES GENERAL DESCRIPTION HIGH LEVEL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS GENERAL SPECIFICATIONS SUPERVISORY SPECIFICATIONS BUCK SPECIFICATIONS LDO SPECIFICATIONS INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION POWER MANAGEMENT UNIT Thermal Protection Undervoltage Lockout Enable/Shutdown BUCK SECTION Control Scheme PWM Mode Power Save Mode (PSM) PSM Current Threshold Short-Circuit Protection Soft Start Current Limit 100% Duty Operation LDO SECTION SUPERVISORY SECTION Reset Output Manual Reset Input Watchdog 1 Input Watchdog 2 Input Watchdog Status Indicator APPLICATIONS INFORMATION BUCK EXTERNAL COMPONENT SELECTION Inductor Output Capacitor Input Capacitor LDO CAPACITOR SELECTION Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties SUPERVISORY SECTION Watchdog 1 Input Current Negative-Going VCC Transients Watchdog Software Considerations PCB LAYOUT GUIDELINES POWER DISSIPATION/THERMAL CONSIDERATIONS Buck Regulator Power Dissipation LDO Regulator Power Dissipation Junction Temperature EVALUATION BOARD SCHEMATICS AND ARTWORK SUGGESTED LAYOUT BILL OF MATERIALS APPLICATION DIAGRAM FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE