Datasheet ADP5040 (Analog Devices) - 10

ADP5040 Data Sheet 1.820 100 –40°C 1.815 +25°C 90 +85°C VIN = 4.5V 80 1.810 V ) IN = 5.5V V 70 ( E ) 1.805 G % A ( 60 LT O 1.800 NCY E 50 V T ICI U F 40 1.795 F TP E U O 30 1.790 20 1.785 10 1.780 0 0.01 0.1 1
015
0.001 0.01 0.1 1
018 65- 65-
OUTPUT CURRENT (A) OUTPUT CURRENT (A)
096 096 Figure 15. Buck Load Regulation Across Temperature, Figure 18. Buck Efficiency vs. Load Current, Across Input Voltage, VOUT1 = 1.8 V, PWM Mode VOUT1 = 3.8 V, PWM Mode
1.205 100 –40°C +25°C 90 VIN = 3.6V +85°C 1.200 80 VIN = 4.5V ) V 70 V ( IN = 5.5V E ) G % 1.195 A ( 60 LT O NCY E 50 V T ICI U 1.190 F F 40 TP E U O 30 1.185 20 10 1.180 0 0.01 0.1 1
016
0.0001 0.001 0.01 0.1 1
019 65- 65-
OUTPUT CURRENT (A) OUTPUT CURRENT (A)
096 096 Figure 16. Buck Load Regulation Across Temperature, Figure 19. Buck Efficiency vs. Load Current, Across Input Voltage, VOUT1 = 1.2 V, PWM Mode VOUT1 = 3.3 V, Auto Mode
100 100 90 90 VIN = 3.6 V V IN = 4.5V IN = 4.5 80 80 VIN = 5.5V 70 70 VIN = 5.5 ) ) % % ( 60 ( 60 NCY NCY E 50 E 50 ICI ICI F F F 40 F 40 E E 30 30 20 20 10 10 0 0 0.0001 0.001 0.01 0.1 1
017
0.001 0.01 0.1 1
020 65- 65-
OUTPUT CURRENT (A) OUTPUT CURRENT (A)
096 096 Figure 17. Buck Efficiency vs. Load Current, Across Input Voltage, Figure 20. Buck Efficiency vs. Load Current, Across Input Voltage, VOUT1 = 3.8 V, Auto Mode VOUT1 = 3.3 V, PWM Mode Rev. D | Page 10 of 37 Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS GENERAL SPECIFICATIONS BUCK SPECIFICATIONS LDO1, LDO2 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 Active Pull-Down 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 APPLICATIONS INFORMATION BUCK EXTERNAL COMPONENT SELECTION Feedback Resistors Inductor Output Capacitor Input Capacitor LDO EXTERNAL COMPONENT SELECTION Feedback Resistors Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties POWER DISSIPATION/THERMAL CONSIDERATIONS Buck Regulator Power Dissipation LDO Regulator Power Dissipation Junction Temperature APPLICATION DIAGRAM PCB LAYOUT GUIDELINES SUGGESTED LAYOUT BILL OF MATERIALS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE