Datasheet ADP121 (Analog Devices) - 9

Data Sheet ADP121 0 0 VRIPPLE = 50mV 3.3V/150mA 1.2V/150mA 1.8V/150mA –10 VIN = 5V 3.3V/100µA 1.2V/100µA 1.8V/100µA VOUT = 1.2V –20 –20 COUT = 1µF 150mA –30 100mA –40 10mA –40 B) 1mA B) d 100µA d –50 0µA –60 RR ( RR ( S S P –60 P –80 –70 –80 –100 –90 –100 –120 10 100 1k 10k 100k 1M 10M
014
10 100 1k 10k 100k 1M 10M
017
FREQUENCY (Hz) FREQUENCY (Hz)
06901- 06901- Figure 17. Power Supply Rejection Ratio vs. Frequency Figure 20. Power Supply Rejection Ratio vs. Frequency at Various Output Voltages and Load Currents
0 10 VRIPPLE = 50mV –10 1.2V VIN = 5V 150mA 1.8V V 100mA OUT = 1.8V –20 3.3V C 10mA OUT = 1µF 1mA –30 100µA 1 0µA z) –40 B) √H d V/ –50 (µ RR ( S P ISE –60 O N 0.1 –70 –80 –90 –100 0 10 100 1k 10k 100k 1M 10M
015
10 100 1k 10k 100k
021
FREQUENCY (Hz) FREQUENCY (Hz)
06901- 06901- Figure 18. Power Supply Rejection Ratio vs. Frequency Figure 21. Output Noise Spectrum, VIN = 5 V, ILOAD = 10 mA, COUT = 1 µF
0 70 VRIPPLE = 50mV –10 V 150mA IN = 5V 60 V 100mA OUT = 3.3V –20 10mA COUT = 1µF 1mA 50 –30 100µA 0µA –40 rms) B) V 40 d µ ( –50 E RR ( S OIS 30 P N –60 UT O –70 20 3.3V 2.5V –80 1.8V 10 1.5V –90 1.2V –100 0
022
10 100 1k 10k 100k 1M 10M
016
0.001 0.01 0.1 1 10 100 1000 FREQUENCY (Hz) ILOAD (mA)
06901- 06901- Figure 19. Power Supply Rejection Ratio vs. Frequency Figure 22. Output Noise vs. Load Current and Output Voltage, VIN = 5 V, COUT = 1 μF Rev. G | Page 9 of 20 Document Outline Features Applications Typical Application Circuits General Description Revision History Specifications Recommended Specifications: Input and Output Capacitors Absolute Maximum Ratings Thermal Data Thermal Resistance ESD Caution Pin Configurations 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 PCB Layout Considerations Outline Dimensions Ordering Guide