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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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VN7140AS12TR датащи(PDF) 28 Page - STMicroelectronics |
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VN7140AS12TR датащи(HTML) 28 Page - STMicroelectronics |
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28 / 39 page  Application information VN7140AS12 28/39 DocID029756 Rev 2 4.4.2 Short to VCC and OFF-state open-load detection Short to VCC A short circuit between VCC and output is indicated by the relevant current sense pin set to VSENSEH during the device off-state. Small or no current is delivered by the current sense during the on-state depending on the nature of the short circuit. OFF-state open-load with external circuitry Detection of an open-load in off mode requires an external pull-up resistor RPU connecting the output to a positive supply voltage VPU. It is preferable that VPU is switched off during the module standby mode in order to avoid the overall standby current consumption to increase in normal conditions, i.e. when load is connected. RPU must be selected in order to ensure VOUT > VOLmax in accordance with the following equation: Equation |
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