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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STCC2540 датащи(PDF) 17 Page - STMicroelectronics |
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STCC2540 датащи(HTML) 17 Page - STMicroelectronics |
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17 / 32 page  DocID024711 Rev 6 17/32 STCC2540 Application information 32 5.8 Input and output capacitors For proper functionality, the STCC2540 device requires two 1 μF decoupling ceramic capacitors CIN and COUT (see Figure 4). These capacitors should be placed as close as possible to the corresponding pins. The electrolytic capacitor CVBUS (see Figure 4) is required by the USB specification to suppress the voltage and current transients caused by hot plugging/unplugging the peripheral devices. This capacitor should be placed as close as possible to the USB connector. The recommended value is 150 μF, low ESR type is preferred. If the VIN supply path is longer than approx. 150 mm, an additional capacitor is required and should be connected in parallel with the CIN to suppress VIN overvoltage transients caused by supply path inductance and fast current changes. The minimum value is 10 μF, and a low ESR type is preferred. |
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