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RT9807 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT9807 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 7 page  RT9807 1 DS9807-01 April 2011 www.richtek.com General Description The RT9807 is a micro-power voltage detector with deglitched manual reset input which supervises the power supply voltage level for microprocessors ( μP) or digital systems. It provides internally fixed threshold levels ranging from 1.2V to 3.3V with 0.1V per step, which covers most digital applications. It features low supply current of 3 μA. The RT9807 performs supervisory function by sending out a reset signal whenever the VDD voltage falls below a preset threshold level. The timeout period of this reset signal can be adjusted via an external capacitor. Once VDD recovers above the threshold level, the reset signal will be released after a certain delay time. To manually pull reset signal low, just pull the manual reset input (MR) below the specified logic-low level. The RT9807 is available in an SOT-23-5 package. Note : Richtek products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. Ordering Information Pin Configurations (TOP VIEW) SOT-23-5 Micro-Power Voltage Detector with Manual Reset Features Monitor System Voltages from 0.9V to 5.5V Capacitor-Adjustable Reset Timeout Period Manual Reset Input Low Quiescent Current High Accuracy ±±±±±1.5% Low Functional Supply Voltage 0.9V N-Channel Open-Drain Output Small SOT-23-5 Package RoHS Compliant and Halogen Free Applications Computers Controllers Intelligent Instruments Critical uP and uC Power Monitoring Portable/Battery-Powered Equipment Typical Application Circuit Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area. GND VDD CT 4 23 5 RST MR RT9807 GND Reset RST VDD 2 3 51 MR CIN 1uF CCT 10nF CT R 470k 4 VDD RT9807- Package Type B : SOT-23-5 Lead Plating System G : Green (Halogen Free and Pb Free) Output Voltage 12 : 1.2V 13 : 1.3V : 32 : 3.2V 33 : 3.3V |
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