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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L9026 датащи(PDF) 28 Page - STMicroelectronics |
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L9026 датащи(HTML) 28 Page - STMicroelectronics |
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28 / 60 page  8 Protection functions 8.1 Overload protection Device is protected in case of over load or short circuit of the load. This protection is present for each HS and LS driver. There are two over load current thresholds (see Figure 13): • IL(OVL0) between channel switch ON and tOVLINDS1 • IL(OVL1) after tOVLIN Figure 13. Overload thresholds Every time the channel is switched OFF the over load current threshold is set back to IL(OVL0). In case the load current is higher than IL(OVL0) or IL(OVL1), after time tOFF(OVL) the over loaded channel is switched OFF and the corresponding diagnosis bit DIAG_OVC_OVT.OUTn is set to “1”. The channel can be switched ON after clearing the protection latch by setting the corresponding DIAG_OVC_OVT_RLW.OUTn bit to “1”. This bit is set back to “0” internally after de-latching the channel. Please refer to Figure 14 for details. Figure 14. Latch off in overload condition L9026 Protection functions DS13397 - Rev 5 page 28/60 |
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