Lpc2000

Em Ter 25 Abr 2006 20:55, Robert Adsett escreveu:
> At 08:04 PM 4/25/2006 -0300, Xtian Xultz wrote:
> >  Its too dangerous to generate 1.8V (more or less) from the 3.3V with two
> >diodes in series?
> >Someone tryed this?
>
> Just put in an LDO.  You can get them as small as a sot23 giving you about
> 90mA with a 30C rise dropping down from the 3V3 supply.
>
> Robert

Thats what I am using, LM317 with SOT23 footprint. What makes me sad is that 
both regulators (one for 3,3 and one for 1,8V) plus the resistors ocuppies 
more space on the board than the LPC itself. So, LPC is a really small 
microcontroller (looking for a ARM based wich has only 48 pins, the 
concorrents are 100 or 144 pins, the smallers!) and with a very small 
footprint (soldering 20 mils pins with soldering iron its not easy, I am 
doing, but its not funny. Its interesting that a 25 mils chip is much more 
easy to solder and to design the board) but the power circuit is bigger...