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RT9834 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT9834 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 13 page  RT9834 ® DS9834-00 May 2013 www.richtek.com 1 © Copyright 2013 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Features Internally Fixed Threshold 1.2V to 5V in 0.1V Step High Accuracy ±±±±±1.5% Low Supply Current 3 μμμμμA No External Components Required Quick Reset within 20 μμμμμs Built-in Recovery Delay : 0ms, 55ms, 220ms, 450ms Options 800ns Glitch Immunity of Manual Reset Input Low Functional Supply Voltage 0.9V CMOS Push-Pull Output Small SC-82 and SOT-143 Packages RoHS Compliant and Halogen Free Applications Computers Controllers Intelligent Instruments Critical μP and μC Power Monitoring Portable/Battery-Powered Equipment Micro-Power Voltage Detector with Manual Reset General Description The RT9834 is a micro-power voltage detector with deglitched manual reset input supervising the power supply voltage level for microprocessors ( μP) or digital systems. It provides internally fixed threshold levels with 0.1V per step ranging from 1.2V to 5V, which covers most digital applications. It features low supply current of 3 μA. The RT9834 performs supervisory function by sending out a reset signal whenever the VDD voltage falls below a preset threshold level. This reset signal will last the whole period before VDD recovering. Once VDD recovered upcrossing the threshold level, the reset signal will be released after a certain delay time. To pull reset signal low manually, just pull the manual reset input (MR) below the specified VIL level. The RT9834 is available in the SC-82 and SOT-143 packages. Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area. Simplified Application Circuit RT9834 VDD GND MR RESET/ RESET VDD µp RESET/ RESET |
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