Datasheet ADP220, ADP221 (Analog Devices) - 9

Data Sheet ADP220/ADP221 180 –10 VRIPPLE = 50mV 200mA 160 –20 VIN = 2.5V 100mA VOUT = 0.8V 10mA C 1mA 140 –30 OUT = 1µF 100µA A) µ –40 ( 120 NT –50 100 B) d –60 80 RR ( S P –70 UND CURRE 60 RO ILOAD = 1mA –80 G I 40 LOAD = 5mA ILOAD = 10mA –90 ILOAD = 50mA 20 ILOAD = 100mA –100 ILOAD = 200mA 0 –110 2.6 2.7 2.8 2.9 3.0 3.1
016
10 100 1k 10k 100k 1M 10M
019
INPUT VOLTAGE (V) FREQUENCY (Hz)
07572- 07572- Figure 16. Ground Current vs. Input Voltage (In Dropout) Figure 19. Power Supply Rejection Ratio vs. Frequency, 0.8 V
–10 0 VRIPPLE = 50mV 200mA 3.3V/200mA 0.8V/200mA 1.8V/200mA –20 VIN = 3.8V 100mA –10 V 3.3V/100µA 0.8V/100µA 1.8V/100µA OUT = 2.8V 10mA –30 COUT = 2.2µF 1mA –20 100µA –40 –30 –50 –40 B) B) d d –60 –50 RR ( RR ( S S P –70 P –60 –80 –70 –90 –80 –100 –90 –110 –100 10 100 1k 10k 100k 1M 10M
017
10 100 1k 10k 100k 1M 10M
020
FREQUENCY (Hz) FREQUENCY (Hz)
07572- 07572- Figure 17. Power Supply Rejection Ratio vs. Frequency, 2.8 V Figure 20. Power Supply Rejection Ratio vs. Frequency, at Various Output Voltages and Load Currents
0 10 VRIPPLE = 50mV 200mA 3.3V µV/ Hz –10 VIN = 4.3V 100mA 2.8V µV/ Hz V z) OUT = 3.3V 10mA 0.8V µV/ Hz –20 COUT = 1µF 1mA H 100µA V/ –30 M (µ 1 U R –40 T B) d –50 RR ( S P –60 ISE SPEC O 0.1 N –70 T PU –80 T U O –90 –100 0.01 10 100 1k 10k 100k 1M 10M
018
10 100 1k 10k 100k
021
FREQUENCY (Hz) FREQUENCY (Hz)
07572- 07572- Figure 18. Power Supply Rejection Ratio vs. Frequency, 3.3 V Figure 21. Output Noise Spectrum, VIN = 5 V, ILOAD = 10 mA Rev. H | Page 9 of 20 Document Outline Features Applications Typical Application Circuits General Description Table of Contents Revision History Specifications Input and Output Capacitor, Recommended Specifications Absolute Maximum Ratings Thermal Data Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Applications Information Capacitor Selection Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties Undervoltage Lockout Enable Feature Current-Limit and Thermal Overload Protection Thermal Considerations Printed Circuit Board (PCB) Layout Considerations Outline Dimensions Ordering Guide