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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PM6670S датащи(PDF) 32 Page - STMicroelectronics |
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PM6670S датащи(HTML) 32 Page - STMicroelectronics |
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32 / 53 page  Device description PM6670S 32/53 After a fixed 3 ms total time, the soft-start finishes and UVP is released: if the output voltage doesn't reach the under voltage threshold within soft-start duration, the UVP condition is detected and the device performs a soft end and latches off. Depending on the load conditions, the inductor current may or may not reach the nominal value of the current limit during the soft-start (Figure 38 shows two examples). 7.1.7 Power good signal The PG pin is an open drain output used to monitor output voltage through VSNS (in fixed output voltage mode) or MODE (in adjustable output voltage mode) pins and is enabled after the soft-start timer has expired. PG signal is held low if the VDDQ output voltage drops 10 % below or rises 10 % above the nominal regulated value. The PG output can sink current up to 4 mA. Figure 38. Soft-start at heavy load (a) and short-circuit (b) conditions, Pulse-Skip enabled (a) (b) |
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