Datasheet ADP5134 (Analog Devices) - 9

Data Sheet ADP5134 100 100 VVIN1 = 3.9V 90 90 80 V 80 VIN2 = 2.5V V V VIN1 = 4.2V VIN2 = 3.6V 70 V 70 VIN2 = 4.2V V VVIN2 = 5.5V %) VIN1 = 5.5V %) ( 60 ( 60 Y C NCY 50 N E 50 IE ICI F 40 F 40 FFIC E E 30 30 20 20 10 10 0 0 0.001 0.01 0.1 1
009
0.001 0.01 0.1 1
012
IVOUT1 (A)
11710-
IVOUT2 (A)
1710- 1 Figure 9. BUCK1 Efficiency vs. Load Current, Across Input Voltage, Figure 12. BUCK2 Efficiency vs. Load Current, Across Input Voltage, VVOUT1 = 3.3 V, Auto Mode VVOUT2 = 1.8 V, PWM Mode
100 100 90 90 80 80 VVIN1 = 5.5V 70 70 VVIN1 = 3.9V %) %) ( 60 ( Y 60 Y C C N 50 N IE 50 IE 40 FFIC 40 FFIC E E VVIN1 = 2.5V 30 30 VVIN1 = 3.6V VVIN1 = 4.2V 20 20 VVIN1 = 5.5V 10 VVIN1 = 4.2V 10 0 0 0.001 0.01 0.1 1
010
0.001 0.01 0.1 1
013
IVOUT1 (A)
1710- 1
IVOUT1 (A)
1710- 1 Figure 10. BUCK1 Efficiency vs. Load Current, Across Input Voltage, Figure 13. BUCK1 Efficiency vs. Load Current, Across Input Voltage, VVOUT1 = 3.3 V, PWM Mode VVOUT1 = 0.8 V, Auto Mode
100 90 90 80 80 70 70 60 %) %) ( 60 ( Y Y C 50 C N 50 N IE IE V 40 40 VIN2 = 2.5V FFIC V FFIC E VIN2 = 3.6V E V 30 30 VIN2 = 4.2V VVIN2 = 5.5V V 20 VIN1 = 2.5V 20 VVIN1 = 3.6V VVIN1 = 4.2V 10 10 VVIN1 = 5.5V 0 0
1
0.001 0.01 0.1 1
1 0
0.001 0.01 0.1 1
014
IVOUT2 (A)
1710-
I
1710- 1
VOUT1 (A)
1 Figure 11. BUCK2 Efficiency vs. Load Current, Across Input Voltage, Figure 14. BUCK1 Efficiency vs. Load Current, Across Input Voltage, VVOUT2 = 1.8 V, Auto Mode VVOUT1 = 0.8 V, PWM Mode Rev. 0 | 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 Power-Good Output Thermal Protection Undervoltage Lockout Precision Enable and Shutdown Control BUCK1 and BUCK2 Control Scheme PWM Mode Power Save Mode (PSM) PSM Current Threshold Oscillator and Phasing of Inductor Switching Short-Circuit Protection Buck Regulator Soft Start Current Limit 100% Duty Operation Active Pull-Down Resistors LDO1 and LDO2 LDO Regulator Soft Start Applications Information Buck Regulator External Component Selection Feedback Resistors Inductor Output Capacitor Input Capacitor LDO Regulator 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