40 V, 200 mA, Low Noise, CMOS LDO Linear Regulator Data Sheet ADP7142 FEATURES TYPICAL APPLICATION CIRCUITS Low noise: 11 V rms independent of fixed output voltage ADP7142 V = 6V V = 5V PSRR of 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz, IN OUT VIN VOUT V 5 V, V = 7 V C C OUT IN IN OUT 2.2F 2.2F Input voltage range: 2.7 V to 40 V SENSE/ADJ ON Maximum output current: 200 mA EN SS Initial accuracy: 0.8% GND C SS OFF 1nF Accuracy over line, load, and temperature 1.2% to +1.5%, T = 40C to +85C J Figure 1. ADP7142 with Fixed Output Voltage, 5 V 1.8%, T = 40C to +125C J Low dropout voltage: 200 mV (typical) at a 200 mA load, ADP7142 V = 7V V = 6V V = 5 V IN OUT OUT VIN VOUT C C User programmable soft start (LFCSP and SOIC only) IN 2k OUT 2.2F 2.2F SENSE/ADJ Low quiescent current, I = 50 A (typical) with no load GND 10k ON Low shutdown current: 1.8 A at V = 5 V, 3.0 A at V = 40 V IN IN EN SS Stable with a small 2.2 F ceramic output capacitor C GND SS OFF 1nF Fixed output voltage options: 1.8 V, 2.5 V, 3.3 V, 3.8 V, and 5.0 V 15 standard voltages between 1.2 V and 5.0 V are Figure 2. ADP7142 with 5 V Output Adjusted to 6 V available Adjustable output from 1.2 V to V V , output can be IN DO adjusted above initial set point Precision enable 2 mm 2 mm, 6-lead LFCSP, 8-Lead SOIC, 5-Lead TSOT Supported by ADIsimPower tool APPLICATIONS Regulation to noise sensitive applications ADC, DAC circuits, precision amplifiers, power for VCO VTUNE control Communications and infrastructure Medical and healthcare Industrial and instrumentation (adjustable), 1.8 V, 2.5 V, 3.3 V, 3.8 V, and 5.0 V. Additional GENERAL DESCRIPTION voltages available by special order are 1.5 V, 1.85 V, 2.0 V, 2.2 V, The ADP7142 is a CMOS, low dropout (LDO) linear regulator 2.75 V, 2.8 V, 2.85 V, 4.2 V, and 4.6 V. that operates from 2.7 V to 40 V and provides up to 200 mA of Each fixed output voltage can be adjusted above the initial set output current. This high input voltage LDO is ideal for the point with an external feedback divider. This allows the ADP7142 regulation of high performance analog and mixed signal circuits operating from 39 V down to 1.2 V rails. Using an to provide an output voltage from 1.2 V to VIN VDO with high advanced proprietary architecture, the device provides high PSRR and low noise. power supply rejection, low noise, and achieves excellent line and User programmable soft start with an external capacitor is load transient response with a small 2.2 F ceramic output available in the LFCSP and SOIC packages. capacitor. The ADP7142 regulator output noise is 11 V rms The ADP7142 is available in a 6-lead, 2 mm 2 mm LFCSP independent of the output voltage for the fixed options of 5 V making it not only a very compact solution, but it also provides or less. excellent thermal performance for applications requiring up to The ADP7142 is available in 15 fixed output voltage options. 200 mA of output current in a small, low profile footprint. The The following voltages are available from stock: 1.2 V ADP7142 is also available in a 5-lead TSOT and an 8-lead SOIC. Rev. H Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. Tel: 781.329.4700 20142020 Analog Devices, Inc. All rights reserved. No license is granted by implication or otherwise under any patent or patent rights of Analog Technical Support www.analog.com Devices. Trademarks and registered trademarks are the property of their respective owners. 11848-001 11848-002ADP7142 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Applications Information ............................................................. 14 Applications ...................................................................................... 1 ADIsimPower Design Tool ...................................................... 14 Typical Application Circuits ........................................................... 1 Capacitor Selection .................................................................... 14 General Description ......................................................................... 1 Programable Precision Enable ................................................. 15 Revision History ............................................................................... 2 Soft Start ...................................................................................... 15 Specifications .................................................................................... 3 Noise Reduction of the ADP7142 in Adjustable Mode ........ 16 Input and Output Capacitance, Recommended Specifications .. 4 Effect of Noise Reduction on Start-Up Time ......................... 16 Absolute Maximum Ratings ........................................................... 5 Current-Limit and Thermal Overload Protection ................ 17 Thermal Data ................................................................................ 5 Thermal Considerations ........................................................... 17 Thermal Resistance ...................................................................... 5 Printed Circuit Board Layout Considerations ........................... 20 ESD Caution.................................................................................. 5 Outline Dimensions ....................................................................... 22 Pin Configurations and Function Descriptions ........................... 6 Ordering Guide .......................................................................... 23 Typical Performance Characteristics ............................................. 7 Theory of Operation ...................................................................... 13 REVISION HISTORY 3/2020Rev. G to Rev. H 11/2017Rev. C to Rev. D Changes to General Description Section ...................................... 1 Changes to Ordering Guide .......................................................... 22 Changes to Shutdown Current Parameter, Table 1 ..................... 3 Updated Outline Dimensions ...................................................... 23 Changes to Theory of Operation Section .................................... 13 6/2016Rev. B to Rev. C Changes to Figure 42 ..................................................................... 13 Change to Figure 50 ....................................................................... 16 Changes to Current-Limit and Thermal Overload Changes to Programmable Precision Enable Section and Soft Protection Section .......................................................................... 17 Start Section .................................................................................... 15 Changes to Table 8 and Table 9.................................................... 21 Changes to Figure 50 ..................................................................... 16 Added Effect of Noise Reduction on Start-Up Time Section .. 16 10/2019Rev. F to Rev. G Changes to Features Section and General Description Section ....... 1 4/2015Rev. A to Rev. B Changes to Ordering Guide .......................................................... 23 Changes to Ordering Guide .......................................................... 23 9/2018Rev. E to Rev. F 12/2014Rev. 0 to Rev. A Changes to Ordering Guide .......................................................... 23 Changes to Figure 36 to Figure 41 ............................................... 12 Changes to Figure 44 ..................................................................... 14 4/2018Rev. D to Rev. E Updated Figure 67 Outline Dimensions .................................... 22 Changes to Features Section ........................................................... 1 Changes to Ordering Guide .......................................................... 23 9/2014Revision 0: Initial Version Rev. H Page 2 of 23