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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADP1031ACPZ-2-R7 датащи(PDF) 35 Page - Analog Devices |
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ADP1031ACPZ-2-R7 датащи(HTML) 35 Page - Analog Devices |
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35 / 38 page  Data Sheet ADP1031 Rev. A | Page 35 of 38 60 Hz sine wave, and it is well within the limit for a 20-year service life. The dc working voltage limit is set by the creepage of the package as specified in IEC 60664-1. This value can differ for specific system level standards. THERMAL ANALYSIS For the purpose of thermal analysis, the ADP1031 die are treated as a thermal unit, with the highest junction temperature reflected in the θJA values from Table 7. The value of θJA is based on measurements taken with the devices mounted on a JEDEC standard, 4-layer board with fine width traces and still air. Under normal operating conditions, the ADP1031 operates at a full load across the full temperature range without derating the output current. However, following the recommendations in the PCB Layout Considerations section decreases thermal resistance to the PCB, allowing increased thermal margins in high ambient temperatures. Each switching regulator in the ADP1031 has a thermal shutdown circuit that turns off the dc- to-dc converter and the outputs when a die temperature of approximately 150°C is reached. When the die cools below approximately 135°C, the ADP1031 dc-to-dc converter outputs turn on again. |
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