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ADP7183-3.3-EVALZ 数据表(PDF) 1 Page - Analog Devices

部件名 ADP7183-3.3-EVALZ
功能描述  Supported by ADIsimPOWER voltage regulator design tool
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADP7183-3.3-EVALZ 数据表(HTML) 1 Page - Analog Devices

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−300 mA, Ultralow Noise, High PSRR,
Low Dropout Linear Regulator
Data Sheet
ADP7183
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
FEATURES
Input voltage range: −2.0 V to −5.5 V
Maximum output current: −300 mA
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
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): ±0.5% at IOUT = −10 mA
Output voltage accuracy over line, load, and temperature: ±2.6%
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
APPLICATIONS
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
TYPICAL APPLICATION CIRCUITS
VOUT = –3.3V
COUT
4.7µF
CA
1µF
CAFB
10nF
+1.25V
0V
–1.3V
OFF
ON
VIN
EN
VREG
GND
VOUT
SENSE
VA
VAFB
CIN
4.7µF
VIN = –3.8V
CREG
1µF
ADP7183
EP
Figure 1. ADP7183 with Fixed Output Voltage, VOUT = −3.3 V
VOUT = –2.5V
COUT
4.7µF
+1.25V
0V
–1.3V
OFF
ON
VIN
EN
VREG
GND
VOUT
SENSE
VA
VAFB
CIN
4.7µF
VIN = –3V
CREG
1µF
ADP7183
CA
1µF
CAFB
10nF
R2
24.9kΩ
R1
100kΩ
EP
Figure 2. ADP7183 with Adjustable Output Voltage, VOUT = −2.5 V
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.
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.
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.


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