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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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AN2870 데이터시트(PDF) 35 Page - STMicroelectronics |
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AN2870 데이터시트(HTML) 35 Page - STMicroelectronics |
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35 / 41 page  AN2870 Designing with L6585DE 35/41 Figure 18. EOL - Cblock to ground Lamp to GND configuration: In case of lamp to ground configuration the fix reference mode is suggested. In order to set this mode a resistor placed between EOLP and GND is needed: its value has to be chosen as follows: ● 75 k Ω < R eolp < 91kΩ → window amplitude = 240 mV ● 620 k Ω < R eolp → window amplitude = 720 mV The EOL pin biasing proceeds as follows: A voltage shift is needed in order to detect a null value with a positive referenced comparator: two Zener diodes are requested. The current capability of EOL pin is equal to 5.5 µA, therefore the minimum Zener voltage that guarantees accuracy of the measurement is 8 V. |
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