ADP7142Data Sheet7000LOAD = 5mA LOAD = 10mA–10600LOAD = 50mA LOAD = 100mA–20LOAD = 150mAA)500LOAD = 200mA–30(µ T N)–40RE400B (d R–50CURR300PS–60UND10HzRO–70100HzG2001kHz–8010kHz100100kHz–901MHz 10MHz0–100 5 3.13.33.53.73.9 2 022 0.20.61.01.41.82.22.63.0 -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 3000VIN = 2.7VVIN = 5.0VV250IN = 10VV–20IN = 20VVIN = 40VA)200–40(µ) BNT150(d R–60RRER3.0VCUPS2.0VS S100–801.6V1.4V1.2V1.0V50–100800mV700mV600mV500mV0 3 –120–40–52585125 02 101001k10k100k1M10M 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 003.0V10Hz 100Hz–102.0V–101.6V1kHz1.4V10kHz–20–201.2V100kHz1.0V1MHz–30800mV–3010MHz700mV)–40)–40B600mVB(d(dR–50R–50RRPS–60PS–60–70–70–80–80–90–90–100–100 7 1101001k10k100k1M10M 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