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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32WB50CG датащи(PDF) 115 Page - STMicroelectronics |
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STM32WB50CG датащи(HTML) 115 Page - STMicroelectronics |
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115 / 119 page  DS13047 Rev 5 115/119 STM32WB50CG STM32WB30CE Package information 115 The following example shows how to calculate the temperature range needed for a given application. Example: High-performance application Assuming the following application conditions: Maximum ambient temperature TAmax = 82 °C (measured according to JESD51-2), IDDmax = 50 mA, VDD = 3.5 V, maximum 20 I/Os used at the same time in output at low level with IOL = 8 mA, VOL = 0.4 V and maximum eight I/Os used at the same time in output at low level with IOL = 20 mA, VOL= 1.3 V PINTmax = 50 mA × 3.5 V = 175 mW PIOmax = 20 × 8 mA × 0.4 V + 8 × 20 mA × 1.3 V = 272 mW This gives: PINTmax = 175 mW and PIOmax = 272 mW: PDmax = 175 + 272 = 447 mW Using the values obtained in Table 86 TJmax is calculated as follows: – For UFQFPN48, 24.9 °C/W TJmax = 82 °C + (24.9 °C/W × 447 mW) = 82 °C + 22 °C = 93 °C This is within the range of the suffix 5 version parts (–10 < TJ < 105 °C), see Section 8. In this case, parts must be ordered at least with the temperature range suffix 5 (see Section 8). |
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