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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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AN3271 Fiches technique(PDF) 21 Page - STMicroelectronics |
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AN3271 Fiches technique(HTML) 21 Page - STMicroelectronics |
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21 / 29 page  AN3271 VCC transient protection Doc ID 17933 Rev 2 21/29 11 VCC transient protection The absolute maximum supply voltage of the STM660x is 7 V. The immunity of high voltage transients can be improved by using a Zener diode Z1 and current limiting resistor R1 (see Figure 19). The Zener diode does not draw any current within the operating VCC voltage range (VCC specified from 1.6 V to 5.5 V). A possible PMOS transistor can be protected by Zener diode Z2 similarly (see Figure 19). The diode should have a breakdown voltage smaller than the PMOS gate-source breakdown voltage. Figure 19. VCC transient protection |
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