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EM6352YSC4B1.7 Datasheet(PDF) 1 Page - EM Microelectronic - MARIN SA |
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EM6352YSC4B1.7 Datasheet(HTML) 1 Page - EM Microelectronic - MARIN SA |
1 / 7 page EM6352 Copyright © 2006, EM Microelectronic-Marin SA 03/06 – rev.I 1 www.emmicroelectronic.com Voltage Detector, High-Precision Description The EM6352 is an ultra-low current voltage detector available in a large variety of configurations and very small packages for maximum flexibility in all end-applications up to 125°C and using power supplies between 1.5V and 5.5V. This circuit monitors the supply voltage of any electronic system, and generates the appropriate reset signal without a delay time. The threshold defines the minimum allowed voltage which guarantees the good functionality of the system. As long as VDD stays above the threshold voltage, the output stays inactive. If VDD drops below VTH, the output goes active. The output is guaranteed to be in the correct state for VDD down to 0.8V. There are 12 reset threshold voltages starting as low as 1.31V and up to 4.63V. The EM6352 features three output types: active-low push-pull, active-low open-drain and active-high push-pull. Small SC70 and SOT23 packages as well as ultra-low supply current of 2.7µA make the EM6352 an ideal choice for portable and battery-operated devices. Typical Application V DD GND RESET EM6352 V DD GND RESET MPU, DSP V DD GND * R EXT for open-drain version only * Pin Configuration (top view) SC70-4L (SC-82AB) 1 2 4 3 V DD GND NC SOT23-5L 1 3 2 5 4 NC NC 1 2 3 GND V DD SOT23-3L V DD GND RESET (RESET) RESET (RESET) RESET (RESET) SC70-3L 1 3V DD RESET (RESET) 2 GND Features ! Ultra-low supply current of 2.7µA (VDD=3.3V) ! Operating temperature range: -40°C to +125°C ! ±1.5% reset threshold accuracy ! 12 reset threshold voltages VTH: 4.63V, 4.4V, 3.08V, 2.93V, 2.63V, 2.26V, 2.2V, 1.8V, 1.66V, 1.57V, 1.38V, 1.31V ! 3 reset output options: Active-low RESET push-pull Active-low RESET open-drain Active-high RESET push-pull ! No external components ! Immune to short negative VDD transients ! Guaranteed Reset valid down to 0.8V ! Threshold hysteresis: 2.1% of VTH ! Very small SOT23-5L, SOT23-3L, SC70-3L and SC70-4L (SC-82AB) packages Applications ! Mobile and cordless phones ! Modems ! Printers ! TV, VCR, Video sets ! GPS ! Toys ! Basestations ! NiCd cell battery ! Automotive systems Block Diagram (RESET) RESET V DD GND + - Voltage Reference Pin Description Pin SOT23-5L SOT23-3L SC70-4L SC70-3L Name Function RESET Active-low RESET output. RESET remains low while VDD is below the reset threshold voltage. 1 1 1 2 RESET Active-high RESET output. RESET remains high while VDD is below the reset threshold voltage. 2 3 2 3 VDD Supply Voltage (5.5V max.) 3 2 4 1 GND Ground 4, 5 - 3 - N.C. Not connected. Not internally connected EM MICROELECTRONIC-MARIN SA |
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