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ADP7183-3.3-EVALZ

更新时间： 2024-11-30 01:03:03
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亚德诺 - ADI /
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Supported by ADIsimPOWER voltage regulator design tool

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ADP7183-3.3-EVALZ 数据手册

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−300 mA, Ultralow Noise, High PSRR,  
Low Dropout Linear Regulator  
ADP7183  
Data Sheet  
FEATURES  
TYPICAL APPLICATION CIRCUITS  
Input voltage range: −2.0 V to −5.5 V  
Maximum output current: −300 mA  
EP  
V
= –3.8V  
VIN  
VOUT  
V
= –3.3V  
OUT  
IN  
Fixed output voltage options: −0.5 V to −4.5 V  
Adjustable output from −0.5 V to −VIN + 0.5 V  
Low output noise: 4 μV rms from 100 Hz to 100 kHz  
Noise spectral density: 20 nV/√Hz, 10 kHz to 1 MHz  
Power supply rejection ratio (PSRR) at −300 mA load  
75 dB typical at 10 kHz  
C
IN  
4.7µF  
C
OUT  
4.7µF  
SENSE  
ADP7183  
+1.25V  
0V  
VA  
C
1µF  
C
10nF  
OFF  
EN  
A
AFB  
–1.3V  
ON  
VAFB  
VREG  
GND  
C
REG  
1µF  
62 dB typical at 100 kHz  
40 dB typical at 1 MHz  
Low dropout voltage: −130 mV typical at IOUT = −300 mA  
Initial output voltage accuracy (VOUT): 0.5ꢀ at IOUT = −10 mA  
Output voltage accuracy over line, load, and temperature: 2.6ꢀ  
Operating supply current (IGND): −0.6 mA typical at no load  
Low shutdown current: −2 μA typical at VIN = −5.5 V  
Stable with small 4.7 μF ceramic input and output capacitor  
Positive or negative enable logic  
Current-limit and thermal overload protection  
8-lead, 2 mm × 2 mm LFCSP package  
Supported by ADIsimPOWER voltage regulator design tool  
Figure 1. ADP7183 with Fixed Output Voltage, VOUT = −3.3 V  
EP  
V
= –3V  
VIN  
EN  
VOUT  
V
= –2.5V  
IN  
OUT  
C
4.7µF  
C
4.7µF  
IN  
OUT  
SENSE  
ADP7183  
+1.25V  
0V  
VA  
R1  
100kΩ  
C
A
1µF  
C
OFF  
AFB  
10nF  
–1.3V  
ON  
VAFB  
R2  
24.9kΩ  
VREG  
GND  
C
REG  
1µF  
APPLICATIONS  
Figure 2. ADP7183 with Adjustable Output Voltage, VOUT = −2.5 V  
Regulation to noise sensitive applications: analog-to-digital  
converters (ADCs), digital-to-analog converters (DACs),  
precision amplifiers  
Communications and infrastructure  
Medical and healthcare  
Industrial and instrumentation  
GENERAL DESCRIPTION  
The ADP7183 is a complementary metal oxide semiconductor  
(CMOS), low dropout (LDO) linear regulator that operates  
from −2.0 V to −5.5 V and provides up to −300 mA of output  
current. This LDO regulator is ideal for regulation of high  
performance analog and mixed-signal circuits operating  
from −0.5 V down to −4.5 V. Using an advanced proprietary  
architecture, the ADP7183 provides high PSRR and low noise,  
and it achieves excellent line and load transient response with a  
small 4.7 μF ceramic output capacitor.  
Additional voltages available by special order are −0.8 V, −0.9 V,  
−1.3 V, −2.8 V, −4.2 V, and −4.5 V. An adjustable version is also  
available that allows output voltages that range from −0.5 V to  
−VIN + 0.5 V with an external feedback divider.  
The enable logic feature is capable of interfacing with positive  
or negative logic levels for maximum flexibility.  
The ADP7183 regulator output noise is 4 μV rms independent  
of the output voltage. The ADP7183 is available in an 8-lead,  
2 mm × 2 mm LFCSP, making it not only a very compact  
solution but also providing excellent thermal performance for  
applications requiring up to −300 mA of output current in a  
small, low profile footprint.  
The ADP7183 is available in 15 fixed output voltage options.  
The following voltages are available from stock: −0.5 V, −1.0 V,  
−1.2 V, −1.5 V, −1.8 V, −2.0 V, −2.5 V, −3.0 V, and −3.3 V.  
Rev. 0  
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 arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Technical Support  
©2016 Analog Devices, Inc. All rights reserved.  
www.analog.com  
 
 
 
 
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