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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TDA7577BLVPD датащи(PDF) 24 Page - STMicroelectronics |
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TDA7577BLVPD датащи(HTML) 24 Page - STMicroelectronics |
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24 / 43 page  Battery transitions management TDA7577BLV 24/43 DocID025375 Rev 5 6 Battery transitions management 6.1 Low voltage operation (“start stop”) The most recent OEM specifications require automatic stop of car engine at traffic light, in order to reduce emissions of polluting substances. The TDA7577BLV, thanks to its innovating design, is able to play when battery falls down to 6/7 V during such conditions, without producing audible pop noise. The maximum system power will be reduced accordingly. Worst case battery cranking curves are shown below, indicating the shape and duration of allowed battery transitions. Figure 33. Worst case battery cranking curve sample 1 V1 = 12 V; V2 = 6 V; V3 = 7 V; V4 = 8 V t1 = 2 ms; t2 = 50 ms; t3 = 5 ms; t4 = 300 ms; t5 =10 ms; t6 = 1 s; t7 = 2 ms Figure 34. Worst case battery cranking curve sample 2 V1 = 12 V; V2 = 6 V; V3 = 7 V t1 = 2 ms; t2 = 5 ms; t3 = 15 ms; t5 = 1 s; t6 = 50 ms |
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