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???
07/19/10 12:54
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 		 #177380 - Application Note
Responding to: ???'s previous message
There us a 41 page application note all about the MC34063. You should read and understand both the data sheet and this App Note before attempting to build the DC-DC converter.

http://www.onsemi.com/pub_link/...N920-D.PDF

Michael Karas


List of 42 messages in thread
TopicAuthorDate
common DCtoDC converter suggestion            01/01/70 00:00      
   5 things            01/01/70 00:00      
   Figure 17            01/01/70 00:00      
   Problems2Problems            01/01/70 00:00      
   Pin 6 needs to be connected            01/01/70 00:00      
   I would take the LM2574...            01/01/70 00:00      
      great suggestion            01/01/70 00:00      
         Calculation            01/01/70 00:00      
            new schema            01/01/70 00:00      
               New Schema but Still No Go            01/01/70 00:00      
                  New Schema            01/01/70 00:00      
                     from datasheet and AP+calculator            01/01/70 00:00      
                     Still a No Go            01/01/70 00:00      
                        Change            01/01/70 00:00      
                           In the context of this reguator part...            01/01/70 00:00      
                              Power from USB            01/01/70 00:00      
                              General context of switcher chips?            01/01/70 00:00      
                              Hold on            01/01/70 00:00      
                                 USB 500mA            01/01/70 00:00      
                                    never having sucked power from the USB plug            01/01/70 00:00      
                                       RE: delay from plug-in before you can get 500mA?            01/01/70 00:00      
                                          What's Legal...            01/01/70 00:00      
                           Always too short initial posts            01/01/70 00:00      
                              You may have 500mA (2.5W)            01/01/70 00:00      
                                 Yup..            01/01/70 00:00      
                                    12 more than 33 VDC            01/01/70 00:00      
                                       Don't use 7812            01/01/70 00:00      
                                          Used 2 pieces IC            01/01/70 00:00      
                                             Always problem with available power            01/01/70 00:00      
                                                with automatic fuse            01/01/70 00:00      
               Application Note            01/01/70 00:00      
               MC34063A Calculator            01/01/70 00:00      
                  OK            01/01/70 00:00      
            Help calculating divider resistors            01/01/70 00:00      
               E-series            01/01/70 00:00      
         I misunderstood you...            01/01/70 00:00      
            Refer application note AN920/D            01/01/70 00:00      
               App Note Caution            01/01/70 00:00      
                  Yes, but sometimes...            01/01/70 00:00      
                  I suppose so,            01/01/70 00:00      
                     ????            01/01/70 00:00      
            price            01/01/70 00:00      

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