Datasheet ADP5034 (Analog Devices) - 10

ADP5034 Data Sheet 100 100 VIN = 3.9V 90 90 VIN = 3.6V 80 80 VIN = 4.2V VIN = 2.3V 70 70 V V %) IN = 5.5V %) IN = 5.5V ( 60 ( 60 Y C NCY N V 50 IN = 4.2V E 50 IE ICI F 40 40 F FFIC E E 30 30 20 20 10 10 0 0 0.001 0.01 0.1 1
104
0.001 0.01 0.1 1
016
ILOAD (A) I
09703-
OUT (A)
09703- Figure 10. BUCK1 Efficiency vs. Load Current, Across Input Voltage, Figure 13. 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 VIN = 5.5V 70 70 VIN = 3.9V %) ( 60 (%) 60 Y VIN = 2.3V C V N NCY IN = 5.5V V 50 E 50 IN = 4.2V IE V ICI IN = 3.6V 40 F FFIC 40 F E E 30 30 20 20 10 VIN = 4.2V 10 0 0 0.001 0.01 0.1 1 0.001 0.01 0.1 1
018 015
I I OUT (A) OUT (A)
09703- 09703- Figure 11. BUCK1 Efficiency vs. Load Current, Across Input Voltage, Figure 14. BUCK1 Efficiency vs. Load Current, Across Input Voltage, VOUT1 = 3.3 V, PWM Mode VOUT1 = 0.8 V, Auto Mode
100 100 90 90 VIN = 3.6V 80 80 VIN = 2.3V 70 70 VIN = 2.3V VIN = 5.5V V %) IN = 4.2V %) ( 60 V ( 60 VIN = 5.5V Y IN = 3.6V Y C C N N 50 50 IE IE 40 40 FFIC FFIC VIN = 4.2V E E 30 30 20 20 10 10 0 0 0.001 0.01 0.1 1 0.001 0.01 0.1 1
020 017
I I OUT (A) OUT (A)
09703- 09703- Figure 12. BUCK2 Efficiency vs. Load Current, Across Input Voltage, Figure 15. BUCK1 Efficiency vs. Load Current, Across Input Voltage, VOUT2 = 1.8 V, Auto Mode VOUT1 = 0.8 V, PWM Mode Rev. E | Page 10 of 28 Document Outline Features Applications General Description Typical Application Circuit 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 Power Save 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 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 and Thermal Considerations Buck Regulator Power Dissipation LDO Regulator Power Dissipation Junction Temperature PCB Layout Guidelines Typical Application Schematics Bill of Materials Outline Dimensions Ordering Guide