Datasheet ADP7142 (Analog Devices) - 10

ADP7142 Data Sheet 700 0 LOAD = 5mA LOAD = 10mA –10 600 LOAD = 50mA LOAD = 100mA –20 LOAD = 150mA A) 500 LOAD = 200mA –30 (µ T N ) –40 RE 400 B (d R –50 CUR R 300 PS –60 UND 10Hz RO –70 100Hz G 200 1kHz –80 10kHz 100 100kHz –90 1MHz 10MHz 0 –100
5
3.1 3.3 3.5 3.7 3.9
2 022
0.2 0.6 1.0 1.4 1.8 2.2 2.6 3.0
-0 8 4
V
8
IN (V) HEADROOM VOLTAGE (V)
11848- 11 Figure 24. Ground Current vs. Input Voltage (VIN) in Dropout, VOUT = 3.3 V Figure 27. Power Supply Rejection Ratio (PSRR) vs. Headroom Voltage, VOUT = 1.8 V, for Different Frequencies
300 0 VIN = 2.7V VIN = 5.0V V 250 IN = 10V V –20 IN = 20V VIN = 40V A) 200 –40 (µ ) B NT 150 (d R –60 RRE R 3.0V CU PS 2.0V S S 100 –80 1.6V 1.4V 1.2V 1.0V 50 –100 800mV 700mV 600mV 500mV 0
3
–120 –40 –5 25 85 125
02
10 100 1k 10k 100k 1M 10M
026 8-
TEMPERATURE (°C)
11848-
FREQUENCY (Hz)
1184 Figure 25. Soft Start (SS) Current vs. Temperature, Multiple Input Voltages (V Figure 28. Power Supply Rejection Ratio (PSRR) vs. Frequency, V IN), OUT = 3.3 V, V for Various Headroom Voltages OUT = 5 V
0 0 3.0V 10Hz 100Hz –10 2.0V –10 1.6V 1kHz 1.4V 10kHz –20 –20 1.2V 100kHz 1.0V 1MHz –30 800mV –30 10MHz 700mV ) –40 ) –40 B 600mV B (d (d R –50 R –50 R R PS –60 PS –60 –70 –70 –80 –80 –90 –90 –100 –100
7
1 10 100 1k 10k 100k 1M 10M
024
0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
02 8- 48-
FREQUENCY (Hz) HEADROOM VOLTAGE (V)
1184 118 Figure 26. Power Supply Rejection Ratio (PSRR) vs. Frequency, VOUT = 1.8 V, Figure 29. Power Supply Rejection Ratio (PSRR) vs. Headroom Voltage, for Various Headroom Voltages VOUT = 3.3 V, for Different Frequencies Rev. H | Page 10 of 23 Document Outline Features Applications Typical Application Circuits General Description Revision History Specifications Input and Output Capacitance, Recommended Specifications Absolute Maximum Ratings Thermal Data Thermal Resistance ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Theory of Operation Applications Information ADIsimPower Design Tool Capacitor Selection Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties Programable Precision Enable Soft Start Noise Reduction of the ADP7142 in Adjustable Mode Effect of Noise Reduction on Start-Up Time Current-Limit and Thermal Overload Protection Thermal Considerations Printed Circuit Board Layout Considerations Outline Dimensions Ordering Guide