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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PM6675 датащи(PDF) 27 Page - STMicroelectronics |
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PM6675 датащи(HTML) 27 Page - STMicroelectronics |
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27 / 47 page  Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s) PM6675 Device description 27/47 6.1.7 Switching section Power-Good signal The SPG pin is an open drain output used to monitor output voltage through VSNS (in fixed output voltage mode) or VSEL (in adjustable output voltage mode) pins and is enabled after the soft-start timer has expired. The SPG signal is held low if the output voltage drops 10% below or rises 10% above the nominal regulated value. The SPG output can sink current up to 4mA. 6.1.8 Switching section output discharge Active soft-end of the output occurs when the SWEN (SWitching ENable) is forced low. When the switching section is turned off, an internal 25 Ω resistor discharges the output through the VSNS pin. Figure 15. Switching section Soft-End Figure 14. Soft-start at heavy load (a) and short-circuit (b) conditions, Pulse-Skip enabled (a) (b) SWEN VOUT Resistive Discharge |
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