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ADP7142ARDZ-1.8-R7 PDF预览

ADP7142ARDZ-1.8-R7

更新时间: 2024-11-24 02:41:47
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亚德诺 - ADI /
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描述
40 V, 200 mA, Low Noise, CMOS LDO Linear Regulator

ADP7142ARDZ-1.8-R7 数据手册

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40 V, 200 mA, Low Noise,  
CMOS LDO Linear Regulator  
ADP7142  
Data Sheet  
FEATURES  
TYPICAL APPLICATION CIRCUITS  
Low noise: 11 μV rms independent of fixed output voltage  
PSRR of 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz,  
ADP7142  
V
= 6V  
V
= 5V  
OUT  
IN  
VIN  
VOUT  
C
C
OUT  
2.2µF  
VOUT ≤ 5 V, VIN = 7 V  
IN  
2.2µF  
Input voltage range: 2.7 V to 40 V  
Maximum output current: 200 mA  
Initial accuracy: 0.8ꢀ  
Accuracy over line, load, and temperature  
−1.2ꢀ to +1.5ꢀ, TJ = −40°C to +85°C  
1.8ꢀ, TJ = −40°C to +125°C  
SENSE/ADJ  
ON  
EN  
SS  
C
1nF  
GND  
SS  
OFF  
Figure 1. ADP7142 with Fixed Output Voltage, 5 V  
Low dropout voltage: 200 mV (typical) at a 200 mA load,  
ADP7142  
V
= 7V  
V
= 6V  
IN  
OUT  
VOUT = 5 V  
VIN  
VOUT  
C
C
OUT  
2.2µF  
User programmable soft start (LFCSP and SOIC only)  
Low quiescent current, IGND = 50 ꢁA (typical) with no load  
Low shutdown current: 1.8 ꢁA at VIN = 5 V, 3.0 ꢁA at VIN = 40 V  
Stable with a small 2.2 μF ceramic output capacitor  
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  
available  
IN  
2kΩ  
2.2µF  
SENSE/ADJ  
10kΩ  
ON  
EN  
SS  
C
GND  
SS  
1nF  
OFF  
Figure 2. ADP7142 with 5 V Output Adjusted to 6 V  
Adjustable output from 1.2 V to VIN – VDO, output can be  
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  
voltages available by special order are 1.5 V, 1.85 V, 2.0 V, 2.2 V,  
2.75 V, 2.8 V, 2.85 V, 4.2 V, and 4.6 V.  
GENERAL DESCRIPTION  
The ADP7142 is a CMOS, low dropout (LDO) linear regulator  
that operates from 2.7 V to 40 V and provides up to 200 mA of  
output current. This high input voltage LDO is ideal for the  
regulation of high performance analog and mixed signal  
circuits operating from 39 V down to 1.2 V rails. Using an  
advanced proprietary architecture, the device provides high  
power supply rejection, low noise, and achieves excellent line and  
load transient response with a small 2.2 μF ceramic output  
capacitor. The ADP7142 regulator output noise is 11 ꢀV rms  
independent of the output voltage for the fixed options of 5 V  
or less.  
Each fixed output voltage can be adjusted above the initial set  
point with an external feedback divider. This allows the ADP7142  
to provide an output voltage from 1.2 V to VIN − VDO with high  
PSRR and low noise.  
User programmable soft start with an external capacitor is  
available in the LFCSP and SOIC packages.  
The ADP7142 is available in a 6-lead, 2 mm × 2 mm LFCSP  
making it not only a very compact solution, but it also provides  
excellent thermal performance for applications requiring up to  
200 mA of output current in a small, low profile footprint. The  
ADP7142 is also available in a 5-lead TSOT and an 8-lead SOIC.  
The ADP7142 is available in 15 fixed output voltage options.  
The following voltages are available from stock: 1.2 V  
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  
rights of third parties that may result from its use. Specifications subject to change without notice.  
No license is granted by implication or otherwise under any patent or patent rights of Analog  
Devices. Trademarks and registeredtrademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700 ©2014–2020 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 

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