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ADM1185ARMZ Datasheet(PDF) 1 Page - Analog Devices |
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ADM1185ARMZ Datasheet(HTML) 1 Page - Analog Devices |
1 / 12 page Quad Voltage Monitor and Sequencer Preliminary Technical Data ADM1185 Rev. PrK June 2006 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other 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 www.analog.com Fax: 781.461.3113 © 2006 Analog Devices, Inc. All rights reserved. FEATURES Powered from 2.7V to 5.5V on the VCC pin Monitors Four Supplies via 0.8% Accurate Comparators Four inputs can be programmed for voltage levels with resistor dividers Three Open-Drain Enable Outputs Open-Drain Power Good Output 10-pin MSOP Package APPLICATIONS Monitor and Alarm Functions Power Supply Sequencing Telecommunication and Datacommunication Equipment PC/Servers GENERAL DESCRIPTION The ADM1185 is an integrated four channel voltage monitoring device. A 2.7V to 5.5V power supply is required on the VCC pin to power the device. Four precision comparators monitor four voltage rails. All comparators have a 0.6V reference with a worst-case accuracy of 0.8%. Resistor networks external to the VIN1-VIN4 pins set the trip points. There are four open-drain outputs on the device. A digital core interprets the comparator outputs and asserts the outputs as appropriate. FUNCTIONAL BLOCK DIAGRAM OUT1 PWRGD VCC VIN2 REF=0.6V VIN3 REF=0.6V VIN4 REF=0.6V REF=0.6V GND OUT2 OUT3 LOGIC POWER AND REFERENCE GENERATOR REF=0.6V VIN1 ADM1185 Figure 1. APPLICATIONS DIAGRAM OUT1 OUT2 OUT3 2.5V OUT 1.8V OUT PWRGD VIN4 VIN2 VIN3 POWER GOOD EN Regulator1 3.3V IN EN OUT IN 2.5V OUT EN OUT IN 1.8V OUT OUT IN GND 1.2V OUT 1.2V OUT Regulator2 Regulator3 VCC VIN1 ADM1185 Figure 2. |
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