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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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UPD360 датащи(PDF) 190 Page - Microchip Technology |
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UPD360 датащи(HTML) 190 Page - Microchip Technology |
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190 / 221 page  UPD360 DS00002084C-page 190 2016-2017 Microchip Technology Inc. 50uS later, the FET is closed. The voltage at the input of the core regulator will be the higher of 3V3_ALW-0.7 or 3V3_V- BUS -0.7. 50uS later, FET B is opened. The voltage at the input of the core regulator is VBUS-0.7. FIGURE 13-14: POWER SWITCH: VBUS PRESENT, 3V3_ALW GOING AWAY STEP THREE FIGURE 13-15: POWER SWITCH: VBUS PRESENT, 3V3_ALW GOING AWAY STEP FOUR 3V3_ALW 3V3_ VBUS VSW A B C D 3V3_VBUS_PWRGD=1 3V3_ALWAYS_PWRGD=0 Higher of 3V3_ALW – 0.7 Or 3V3_VBUS – 0.7 LDOs VCORE _PWRGD 1.8V Analog 1.8V Core EN VMUX_PWRGD SWITCH CONTROL 3V3_ALWAYS_PWRGD 3V3_VBUS_PWRGD VCORE_PWRGD A C D B 3V3_ALW 3V3_ VBUS VSW A B C D 3V3_VBUS_PWRGD=1 3V3_ALWAYS_PWRGD=0 3V3_VBUS-0.7V LDOs VCORE_PWRGD 1.8V Analog 1.8V Core EN VMUX_PWRGD SWITCH CONTROL 3V3_ALWAYS_PWRGD 3V3_VBUS_PWRGD VCORE_PWRGD A C D B |
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