20 V, 200 mA, Low Noise,
CMOS LDO Linear Regulator
Data Sheet
ADP7118
FEATURES TYPICAL APPLICATION CIRCUITS
Low noise: 11 V rms independent of fixed output voltage
ADP7118
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
C C
V 5 V, V = 7 V
OUT IN IN OUT
2.2F 2.2F
Input voltage range: 2.7 V to 20 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. ADP7118 with Fixed Output Voltage, 5 V
1.8%, T = 40C to +125C
J
Low dropout voltage: 200 mV (typical) at a 200 mA load,
ADP7118
V = 7V V = 6V
V = 5 V
OUT IN OUT
VIN VOUT
User programmable soft start (LFCSP and SOIC only) C C
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 = 20 V
IN IN
EN SS
Stable with a small 2.2 F ceramic output capacitor
GND C
SS
OFF
1nF
Fixed output voltage options: 1.8 V, 2.5 V, 3.3 V, 4.5 V, and 5.0 V
16 standard voltages between 1.2 V and 5.0 V are available
Figure 2. ADP7118 with 5 V Output Adjusted to 6 V
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
APPLICATIONS
Regulation to noise sensitive applications
ADC and DAC circuits, precision amplifiers, power for
VCO VTUNE control
Communications and infrastructure
Medical and healthcare
Industrial and instrumentation
Supported by ADIsimPower tool
GENERAL DESCRIPTION
The ADP7118 is a CMOS, low dropout (LDO) linear regulator Additional voltages available by special order are 1.5 V, 1.85 V,
that operates from 2.7 V to 20 V and provides up to 200 mA of 2.0 V, 2.2 V, 2.75 V, 2.8 V, 2.85 V, 3.8 V, 4.2 V, and 4.6 V.
output current. This high input voltage LDO is ideal for the
Each fixed output voltage can be adjusted above the initial set
regulation of high performance analog and mixed-signal circuits
point with an external feedback divider. This allows the ADP7118
operating from 20 V down to 1.2 V rails. Using an advanced
to provide an output voltage from 1.2 V to V V with high
IN DO
proprietary architecture, the device provides high power supply
PSRR and low noise.
rejection, low noise, and achieves excellent line and load transient
User programmable soft start with an external capacitor is
response with a small 2.2 F ceramic output capacitor. The
available in the LFCSP and SOIC packages.
ADP7118 regulator output noise is 11 V rms independent of
the output voltage for the fixed options of 5 V or less. The ADP7118 is available in a 6-lead, 2 mm 2 mm LFCSP
making it not only a very compact solution, but it also provides
The ADP7118 is available in 16 fixed output voltage options.
excellent thermal performance for applications requiring up to
The following voltages are available from stock: 1.2 V (adjustable),
200 mA of output current in a small, low profile footprint. The
1.8 V, 2.5 V, 3.3 V, 4.5 V, and 5.0 V.
ADP7118 is also available in a 5-lead TSOT and an 8-lead SOIC.
Rev. D 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. No
Tel: 781.329.4700 20142018 Analog Devices, Inc. All rights reserved.
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
11849-001
11849-002ADP7118 Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1 Theory of Operation ...................................................................... 13
Applications ....................................................................................... 1 Applications Information .............................................................. 14
Typical Application Circuits ............................................................ 1 ADIsimPower Design Tool ....................................................... 14
General Description ......................................................................... 1 Capacitor Selection .................................................................... 14
Revision History ............................................................................... 2 Programable Precision Enable .................................................. 15
Specifications ..................................................................................... 3 Soft Start ...................................................................................... 15
Input and Output Capacitance, Recommended Specifications ... 4 Noise Reduction of the ADP7118 in Adjustable Mode......... 16
Absolute Maximum Ratings ............................................................ 5 Effect of Noise Reduction on Start-Up Time ......................... 16
Thermal Data ................................................................................ 5 Current-Limit and Thermal Overload Protection ................. 17
Thermal Resistance ...................................................................... 5 Thermal Considerations ............................................................ 17
ESD Caution .................................................................................. 5 Printed Circuit Board Layout Considerations ............................ 20
Pin Configurations and Function Descriptions ........................... 6 Outline Dimensions ....................................................................... 22
Typical Performance Characteristics ............................................. 7 Ordering Guide .......................................................................... 23
REVISION HISTORY
4/2018Rev. C to Rev. D
Changes to Features Section............................................................ 1
Updated Outline Dimensions ....................................................... 22
Changes to Ordering Guide .......................................................... 23
11/2016Rev. B to Rev. C
Changes to Features Section and General Description Section ........ 1
Changes to Ordering Guide ..................................................................... 23
7/2016Rev. A to Rev. B
Change to Table 5 ............................................................................. 6
Change to Figure 42 ....................................................................... 13
Changes to Programmable Precision Enable Section and Soft
Start Section .................................................................................... 15
Added Effect of Noise Reduction on Start-Up Time Section ... 16
12/2014Rev. 0 to Rev. A
Changes to Figure 36 to Figure 41 ................................................ 12
Changes to Figure 44 ...................................................................... 14
9/2014Revision 0: Initial Version
Rev. D | Page 2 of 23