Datasheet ADP5033 (Analog Devices) - 9

Data Sheet ADP5033 100 100 90 90 80 80 70 70 %) %) ( 60 ( 60 NCY 50 NCY 50 E E ICI ICI F 40 F 40 F F E E 30 30 20 20 VIN = 2.4V V V IN = 3.9V IN = 3.6V 10 V 10 V IN = 4.2V IN = 4.5V V V IN = 5.5V IN = 5.5V 0 0 1 10 100 1000
038
0.001 0.01 0.1 1
035
ILOAD (mA) IOUT (A)
09788- 09788- Figure 9. BUCK1 Efficiency vs. Load Current, Across Input Voltage, Figure 12. BUCK2 Efficiency vs. Load Current, Across Input Voltage, VOUT1 = 3.3 V, Auto Mode VOUT2 = 1.8 V, PWM Mode
100 100 90 90 80 80 70 70 %) %) ( 60 ( 60 NCY 50 NCY 50 E E ICI ICI F 40 F 40 F F E E 30 30 20 20 VIN = 2.3V VIN = 3.9V VIN = 3.6V 10 V 10 V IN = 4.2V IN = 4.2V V VIN = 5.5V 0 IN = 5.5V 0 0.001 0.01 0.1 1
039
0.001 0.01 0.1 1
034
I I OUT (A) OUT (A)
09788- 09788- Figure 10. BUCK1 Efficiency vs. Load Current, Across Input Voltage, Figure 13. BUCK1 Efficiency vs. Load Current, Across Input Voltage, V V OUT1 = 3.3 V, PWM Mode OUT1 = 0.8 V, Auto Mode
100 100 90 90 80 80 70 70 %) %) ( 60 ( 60 NCY NCY 50 50 E E ICI ICI F 40 F 40 F F E E 30 30 20 V 20 V IN = 2.3V IN = 2.3V V V IN = 3.6V IN = 3.6V 10 V 10 V IN = 4.2V IN = 4.2V V V IN = 5.5V IN = 5.5V 0 0 0.001 0.01 0.1 1
065 036
0.001 0.01 0.1 1 I I OUT (A) OUT (A)
09788- 09788- Figure 11. BUCK2 Efficiency vs. Load Current, Across Input Voltage, Figure 14. BUCK1 Efficiency vs. Load Current, Across Input Voltage, VOUT2 = 1.8 V, Auto Mode VOUT1 = 0.8 V, PWM Mode Rev. G | Page 9 of 28 Document Outline Features Applications Typical Application Circuit General Description Table of Contents Revision History Specifications General Specifications BUCK1 and BUCK2 Specifications LDO1 and 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 BUCK1 and BUCK2 Control Scheme PWM Mode PSM PSM Current Threshold Oscillator/Phasing of Inductor Switching Short-Circuit Protection Soft Start Current Limit 100% Duty Operation Active Pull-Downs LDO1 and LDO2 Applications Information Buck External Component Selection Inductor Output Capacitor Input Capacitor LDO Capacitor Selection Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties Power Dissipation and Thermal Considerations Buck Regulator Power Dissipation LDO Regulator Power Dissipation Junction Temperature PCB Layout Guidelines Typical Application Schematic Outline Dimensions Ordering Guide