Datasheet ADP5022 (Analog Devices) - 10

ADP5022 100 100 90 90 80 80 70 70 ) ) % 60 % 60 Y ( Y ( C C 50 50 IEN IEN IC IC F 40 F 40 EF EF 30 30 V T 20 IN = 5.5V A = –40°C V 20 IN = 4.5V TA = +25°C V 10 IN = 3.6V 10 TA = +85°C VIN = 2.4V 0
5
0 0.001 0.01 0.1 1
62 -03
0.0001 0.001 0.01 0.1 1
03-
I
253 25
OUT (A) I
08
OUT (A)
08 Figure 16. Buck2 Efficiency vs. Load Current, Across Input Voltage, Figure 19. Buck1 Efficiency vs. Load Current, Across Temperature, VOUT2 = 1.8 V, PWM Mode VOUT1 = 3.3 V, Auto Mode
100 100 90 90 80 80 70 70 ) ) % 60 % 60 Y ( Y ( C C 50 50 IEN IEN IC IC F 40 F 40 EF EF 30 30 VIN = 2.4V T 20 A = +25°C V 20 IN = 3.6V TA = –40°C V 10 IN = 4.5V 10 TA = +85°C VIN = 5.5V 0
4
0 0.0001 0.001 0.01 0.1 1
63 -03
0.0001 0.001 0.01 0.1 1
03-
I
253 25
OUT (A) I
08
OUT (A)
08 Figure 17. Buck1 Efficiency vs. Load Current, Across Input Voltage, Figure 20. Buck2 Efficiency vs. Load Current, Across Temperature, VOUT1 = 0.8 V, Auto Mode VOUT2 = 1.8 V, Auto Mode
100 3.5 90 3.4 TA = +25°C TA = –40°C 80 3.3 TA = +85°C 70 3.2 ) z) % 60 H Y ( M 3.1 C Y ( 50 C IEN 3.0 IC EN F 40 U 2.9 EF EQ R 30 F 2.8 V 20 IN = 2.4V VIN = 3.6V 2.7 V 10 IN = 4.5V V 2.6 IN = 5.5V 0
5
2.5 0.001 0.01 0.1 1
06 40 3-
0 0.1 0.2 0.3 0.4 0.5 0.6
0 3-
I
25
OUT (A)
25 08
OUTPUT CURRENT (A)
08 Figure 18. Buck1 Efficiency vs. Load Current, Across Input Voltage, Figure 21. Buck2 Switching Frequency vs. Output Current, Across VOUT1 = 0.8 V, PWM Mode Temperature, VOUT2 = 1.8 V, PWM Mode Rev. C | Page 10 of 28 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS BUCK1 AND BUCK2 SPECIFICATIONS LDO 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 Oscillator/Phasing of Inductor Switching Enable/Shutdown Short-Circuit Protection Soft Start Current Limit 100% Duty Operation LDO SECTION LDO Undervoltage Lockout APPLICATIONS INFORMATION BUCK EXTERNAL COMPONENT SELECTION Inductor Output Capacitor Input Capacitor LDO CAPACITOR SELECTION Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties PCB LAYOUT GUIDELINES EVALUATION BOARD SCHEMATICS AND ARTWORK SUGGESTED LAYOUT OUTLINE DIMENSIONS ORDERING GUIDE