Datasheet ADP5300 (Analog Devices) - 2
| Hersteller | Analog Devices |
| Beschreibung | 50 mA/500 mA, High Efficiency, Ultralow Power Step-Down Regulator |
| Seiten / Seite | 21 / 2 — ADP5300. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY 6/2016—Rev. 0 to … |
| Revision | B |
| Dateiformat / Größe | PDF / 746 Kb |
| Dokumentensprache | Englisch |
ADP5300. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY 6/2016—Rev. 0 to Rev. A. 8/2015—Revision 0: Initial Version
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ADP5300 Data Sheet TABLE OF CONTENTS
Features... 1 Short-Circuit Protection ... 15 Applications ... 1 Soft Start ... 15 Typical Application Circuit ... 1 Startup with Precharged Output... 15 General Description .. 1 100% Duty Operation.. 15 Revision History .. 2 Active Discharge .. 15 Detailed Functional Block Diagram... 3 VOUTOK Function... 15 Specifications ... 4 Stop Switching.. 16 Absolute Maximum Ratings ... 6 Thermal Shutdown .. 16 Thermal Resistance ... 6 Applications Information.. 17 ESD Caution... 6 External Component Selection... 17 Pin Configuration and Function Descriptions.. 7 Selecting the Inductor ... 17 Typical Performance Characteristics.. 8 Output Capacitor ... 17 Theory of Operation.. 14 Input Capacitor .. 18 Buck Regulator Operational Modes ... 14 Efficiency.. 18 Osillator and Synchronization .. 14 Circuit Board Layout Recommendations .. 18 Adjustable and Fixed Output Voltages ... 14 Typical Application Circuits ... 19 Undervoltage Lockout (UVLO).. 15 Factory Programmable Options ... 20 Enable/Disable ... 15 Outline Dimensions .. 21 Current Limit ... 15 Ordering Guide.. 21
REVISION HISTORY 6/2016—Rev. 0 to Rev. A
Changes to Features Section and General Description Section ...1 Change to SYNC Clock Range Parameter, Table 1...4 Change to Table 4 ...7 Change to Oscil ator and Synchronization Section ...14 Changes to Table 8 ..20 Changes to Ordering Guide ...21
8/2015—Revision 0: Initial Version
Rev. A | Page 2 of 21 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION REVISION HISTORY DETAILED FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION BUCK REGULATOR OPERATIONAL MODES PWM Mode Hysteresis Mode Mode Selection OSILLATOR AND SYNCHRONIZATION ADJUSTABLE AND FIXED OUTPUT VOLTAGES UNDERVOLTAGE LOCKOUT (UVLO) ENABLE/DISABLE CURRENT LIMIT SHORT-CIRCUIT PROTECTION SOFT START STARTUP WITH PRECHARGED OUTPUT 100% DUTY OPERATION ACTIVE DISCHARGE VOUTOK FUNCTION STOP SWITCHING THERMAL SHUTDOWN APPLICATIONS INFORMATION EXTERNAL COMPONENT SELECTION SELECTING THE INDUCTOR OUTPUT CAPACITOR INPUT CAPACITOR EFFICIENCY Power Switch Conduction Losses Inductor Losses Driver Losses Transition Losses CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE
ADP5300 Data Sheet TABLE OF CONTENTS
Features... 1 Short-Circuit Protection ... 15 Applications ... 1 Soft Start ... 15 Typical Application Circuit ... 1 Startup with Precharged Output... 15 General Description .. 1 100% Duty Operation.. 15 Revision History .. 2 Active Discharge .. 15 Detailed Functional Block Diagram... 3 VOUTOK Function... 15 Specifications ... 4 Stop Switching.. 16 Absolute Maximum Ratings ... 6 Thermal Shutdown .. 16 Thermal Resistance ... 6 Applications Information.. 17 ESD Caution... 6 External Component Selection... 17 Pin Configuration and Function Descriptions.. 7 Selecting the Inductor ... 17 Typical Performance Characteristics.. 8 Output Capacitor ... 17 Theory of Operation.. 14 Input Capacitor .. 18 Buck Regulator Operational Modes ... 14 Efficiency.. 18 Osillator and Synchronization .. 14 Circuit Board Layout Recommendations .. 18 Adjustable and Fixed Output Voltages ... 14 Typical Application Circuits ... 19 Undervoltage Lockout (UVLO).. 15 Factory Programmable Options ... 20 Enable/Disable ... 15 Outline Dimensions .. 21 Current Limit ... 15 Ordering Guide.. 21
REVISION HISTORY 6/2016—Rev. 0 to Rev. A
Changes to Features Section and General Description Section ...1 Change to SYNC Clock Range Parameter, Table 1...4 Change to Table 4 ...7 Change to Oscil ator and Synchronization Section ...14 Changes to Table 8 ..20 Changes to Ordering Guide ...21
8/2015—Revision 0: Initial Version
Rev. A | Page 2 of 21 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION REVISION HISTORY DETAILED FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION BUCK REGULATOR OPERATIONAL MODES PWM Mode Hysteresis Mode Mode Selection OSILLATOR AND SYNCHRONIZATION ADJUSTABLE AND FIXED OUTPUT VOLTAGES UNDERVOLTAGE LOCKOUT (UVLO) ENABLE/DISABLE CURRENT LIMIT SHORT-CIRCUIT PROTECTION SOFT START STARTUP WITH PRECHARGED OUTPUT 100% DUTY OPERATION ACTIVE DISCHARGE VOUTOK FUNCTION STOP SWITCHING THERMAL SHUTDOWN APPLICATIONS INFORMATION EXTERNAL COMPONENT SELECTION SELECTING THE INDUCTOR OUTPUT CAPACITOR INPUT CAPACITOR EFFICIENCY Power Switch Conduction Losses Inductor Losses Driver Losses Transition Losses CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE