Hi all. Does anyone know a good circuit for the mc34063a buck boost regulator that will give me 5V? I have no experience using this IC before. As far as i know i can put 3 - 40 volts into it and get 5v out at 1.5 amps. Am i correct that this is a possible use for this ic? if so, can someone please point me to a schematic/instructions?
thanks but im quite a noob to using these sort of software tools. can someone work it out for me and give me a complete circuit?
download datasheet;-
Change Rsc for current.
umm... like i said im a noob to using these tools and reading datasheets. could someone please put together a circuit for me? also, am i right in assuming that this can automatically switch between boost and buck mode so if i supply between 3v and 12v i will get 5v all the way?
ryan27968:
... am i right in assuming that this can automatically switch between boost and buck mode so if i supply between 3v and 12v i will get 5v all the way?
Yes.
ok. good. but can someone give me a circuit that will do this?
ok, i found this diagram: http://electrodesigns.net/blog/free-stuff/MC34063%205V%20Regulator/MC34063%205V%20Circuit.pdf but am not understanding fully. how many ohms is 10R?
10 Ohms ?
And what about sonnyyu's or TI's schematic ( http://www.ti.com/lit/ds/slls636m/slls636m.pdf )
where they propose a 0.3 Ohm resistor ?
The main difference is where Pin 6 is connected: before or after this 0.3 ... 10 Ohm resistor
Doesn't such a resistor rather look like a little melting fuse ?
i have already tried to read the datasheet but it is confusing me. my question is, will the diagram i found work and what are these strange resistor codes meaning?
Page 10 of tech sheet.