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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PM8800ATR датащи(PDF) 19 Page - STMicroelectronics |
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PM8800ATR датащи(HTML) 19 Page - STMicroelectronics |
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19 / 35 page  PM8800A PD interface 19/35 inrush current level, which is set by default at 440 mA. Connecting a resistor between VSS and AUXI_IRL it's possible to adjust this limit to a lower value. Figure 9. Relation between the hot-swap drain-source voltage and the default Inrush current. The maximum inrush current can be set by programming the value of the resistor on the AUX_IRL pin. Depending on the chosen value there could be 3 steps (when the selected max current is between 250 and 400 mA), 2 steps (when the selected max current is between 140 and 250 mA) or a single step. The formulae to select the desired inrush current is the following: The PM8800A useful programming range for the inrush current limitation is between 140 mA and 440 mA. Practical resistor value ranges between 25 k Ω and 82 kΩ. Figure 10. Inrush current limit vs RIRL 15V VIN-VSS 30V 440 250 140 R IRL kΩ [] 11200 I IRL mA [] ------------------------ = |
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