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ADP7183 数据表(PDF) 1 Page - Analog Devices |
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ADP7183 数据表(HTML) 1 Page - Analog Devices |
1 / 19 page −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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类似说明 - ADP7183 |
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