On Mon, Sep 17, 2012 at 12:39 PM, Marc Nicholas wrot= e: > On Sun, Sep 16, 2012 at 7:28 PM, Wojciech Zabolotny wro= te: > > >> The post mortem diagnosis showed, that possibly the capacitor at the >> output of the MCP1640 was incorrectly soldered and got disconnected. >> Has anybody experienced similar problems with MCP1640? >> Is it possible, that temporary disconnection of the output capacitor >> was the only reason why MCP1640 "exploded"? >> > > I'm using the MCP1640B in a design and have also had the "explosion" wher= e, > literally, some of the pins of the chip jumped off the board traces and > magic blue smoke came out. It was a polarity issue in my case, traced bac= k > to a reversed battery connector, although the supply voltage was never > greater than 5vdc. > > They're great little chips, but they do seem to not take abuse well ;) It's a bit tough to take reverse polarity well when your part operates down to 0.35V --=20 Martin K. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .