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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) 16 Page - STMicroelectronics |
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AN3271 Fiches technique(HTML) 16 Page - STMicroelectronics |
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16 / 29 page  Automatic confirmation of power-up AN3271 16/29 Doc ID 17933 Rev 2 8 Automatic confirmation of power-up Connect PSHOLD directly to the output voltage VOUT in order to enable automatic confirmation of power-up (see Figure 14). This allows immediate power-up but does not guarantee proper startup of the application. The enable signal EN (EN) is asserted immediately after pushing the PB button, thus enabling VOUT. Since PSHOLD is connected directly to VOUT, power-up is confirmed immediately and EN (EN) stays asserted. Please note that a small delay can be caused by capacitors connected between ground and VOUT elsewhere in the application. Figure 14. Automatic confirmation of power-up |
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