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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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IR3447MPBF датащи(PDF) 13 Page - International Rectifier |
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IR3447MPBF датащи(HTML) 13 Page - International Rectifier |
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13 / 51 page  IR3447 13 www.irf.com © 2013 International Rectifier July 17, 2013 THERMAL DERATING CURVES Measurements are done on IR3447 Evaluation board. PCB is a 6 layer board with 2 oz copper, FR4 material. Vin=PVin=12V, Vout =1.2V, VCC=internal LDO (6.8V), Fs = 600kHz Vin=PVin=12V, Vout =5.0V, VCC=internal LDO (6.8V), Fs = 600kHz Note: International Rectifier Corporation specifies current rating of SupIRBuck devices conservatively. The continuous current load capability might be higher than the rating of the device if input voltage is 12V typical and switching frequency is below 600kHz. However, the maximum current is limited by the internal current limit and designers need to consider enough guard bands between load current and minimum current limit to guarantee that the device does not trip at steady state condition. |
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