Datasheet ADP2370, ADP2371 (Analog Devices) - 10

ADP2370/ADP2371 Data Sheet 1.25 1.90 1.24 1.23 1.85 1.22 E (V) E (V) G 1.21 G A A LT LT O 1.20 O 1.80 T V T V U 3.20V 1.19 U 3.95V TP 0.1mA TP 5.45V OU 1.18 1mA OU 7.20V 5mA 9.95V 10mA 1.75 1.17 11.95V 50mA 15.20V 100mA 1.16 300mA 800mA 1.15 1.70 3 5 7 9 11 13 15
015
0.1 1 10 100 1000
018
INPUT VOLTAGE (V)
09531-
LOAD (mA)
09531- Figure 15. Line Regulation, VOUT = 1.2 V, Different Loads Figure 18. Load Regulation, VOUT = 1.8 V
1.25 100 1.24 90 1.23 80 1.22 70 E (V) G %) 1.21 ( A 60 Y LT C O 1.20 N 50 IE T V 3.80V U 3.20V 1.19 3.95V 40 FFIC 4.55V TP 5.45V E 6.05V OU 1.18 7.20V 30 7.30V 9.95V 10.55V 11.95V 12.05V 1.17 20 15.20V 15.05V 1.16 10 1.15 0 0.1 1 10 100 1000
016
0.01 0.10 1.0 10 100 1000
019
LOAD (mA) LOAD (mA)
09531- 09531- Figure 16. Load Regulation, VOUT = 1.2 V Figure 19. Efficiency vs. Load Current, VOUT = 3.3 V, Different Input Voltages
1.90 100 90 80 1.85 70 E (V) G %) A ( 60 Y LT C O 1.80 N 50 IE T V –40°C U 40 FFIC –5°C TP 0.1mA E 1mA +25°C OU 5mA 30 +85°C 1.75 10mA +125°C 50mA 20 100mA 300mA 800mA 10 1.70 0 3 5 7 9 11 13 15
017
0.01 0.10 1.0 10 100 1000
020
INPUT VOLTAGE (V) LOAD (mA)
09531- 09531- Figure 17. Line Regulation, VOUT = 1.8 V, Different Loads Figure 20. Efficiency vs. Load Current, VOUT = 3.3 V, Different Temperatures, VIN = 7.3 V Rev. D | Page 10 of 32 Document Outline Features Applications Typical Application Circuit General Description Table of Contents Revision History Specifications Recommended Specifications: Capacitors Absolute Maximum Ratings Thermal Data Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Buck Output Theory of Operation PWM Operation PSM Operation Features Descriptions Precision Enable Forced PWM or PWM/PSM Selection Quick Output Discharge (QOD) Function Short-Circuit Protection Undervoltage Lockout Thermal Protection Soft Start Current Limit 100% Duty Cycle Synchronizing Power Good Applications Information ADIsimPower Design Tool External Component Selection Selecting the Inductor Output Capacitor Input Capacitor Adjustable Output Voltage Programming Efficiency Power Switch Conduction Losses Inductor Losses Switching Losses Transition Losses Recommended Buck External Components Capacitor Selection Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties Thermal Considerations PCB Layout Considerations Packaging and Ordering Information Outline Dimensions Ordering Guide