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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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APW7323KAI-TRG датащи(PDF) 13 Page - Anpec Electronics Coropration |
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APW7323KAI-TRG датащи(HTML) 13 Page - Anpec Electronics Coropration |
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13 / 22 page  Copyright © ANPEC Electronics Corp. Rev. A.5 - Aug., 2013 APW7323/A www.anpec.com.tw 13 Function Description (Cont.) Power Good Indicator POK is actively held low in shutdown and soft-start status. In the soft-start process, the POK is an open-drain. When the soft-start is finished, the POK is released. In normal operation, the POK window is from 87.5% to 112.5% of the converter reference voltage. When the output voltage has to stay within this window, POK signal will become high after 0.5ms internal delay. When the output voltage outruns 82.5% or 117.5% of the target voltage, POK sig- nal will be pulled low immediately. In order to prevent false POK drop, capacitors need to parallel at the output to confine the voltage deviation with severe load step transient. The POK pin, if used, needs an axternal pull high resistor, the recommended resistor should be in the range of 30K Ω to 100KΩ. |
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