Don, You might want to consider one of the modern switching regulators, like this:
http://www.mouser.com/ProductDetail/STMicroelectronics/LD1117V50C/?qs=sGAEpiMZZMsGz1a6aV8DcCwRipvt0X3PXDVXWaOVWAU%3d It's a TO-220, so that might be a concern, but it can output 950ma. The TI LM2931 device looks to be an option, as well, and has TO-92 packaging, for 5vdc: http://www.ti.com/lit/ds/symlink/lm2931-n.pdf Hope this helps! - Alex On Wed, Mar 11, 2015 at 1:52 PM, Don Caprio <[email protected]> wrote: > Hey brains I have a question. > > I'm designing a 5V circuit. Considering the 78L05 (TO-92) and 7805 > (TO-220). > The L05 is rated at 100ma while the 05 comes in 1a and 1.5 versions. > > Is there anything in between? 100ma is not quite enough while the 7805 is > overkill. > Space is a concern so I like the TO-92 package. > > If I'm reading the datasheet right for a 7 segment display it draws > 25-30ma for each > segment? Thats a current draw of 250ma if all segments are lit. Therefore > I may have > to use the 7805/C or change my design to use dual state LED (17-22ma) > instead of the 7 segment LED. > > > > -- > Don Caprio > [email protected] > > -- > You received this message because you are subscribed to the Google Groups > "N8VEM-S100" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
