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Topic: 3v regulator needed (Read 611 times) previous topic - next topic

Carlcox89

hi, i've made an arduino stripboard and need to connect a nrf24l01 that needs a maximum of 3.6v.
What's the best/cheapest regulator i can use to go from 5v to 3.3v or approximately ?

thanks

Grumpy_Mike

I have uses an A033 regulator to get 3V3 from 5V.

Carlcox89

Is it this one http://pdf1.alldatasheet.com/datasheet-pdf/view/111555/ROHM/BA033T.html ?
thanks

dc42

Formal verification of safety-critical software, software development, and electronic design and prototyping. See http://www.eschertech.com. Please do not ask for unpaid help via PM, use the forum.

LarryD

The way you have it in your schematic isn't the same as how you have it wired up!

Grumpy_Mike

Quote
You can use:

You can but the regulation  is not very good and I would at least include some capacitors.

LarryD

The way you have it in your schematic isn't the same as how you have it wired up!

dhenry

Quote
What's the best/cheapest regulator i can use to go from 5v to 3.3v or approximately ?


I am 100% sure that they are not the best, but the 1117s are the cheapest and crappiest regulator that gets the job done.

oric_dan

If you actually look at the datasheet for a 1N400x diode, you'll see it's forward
drop varies from about 0.6V @ 50mA to about 0.8V at 250mA, so the output
of the 3 diode ckt will vary from about 3.2V to 2.6V with those loads. I'd go
with an LM1117, or other v.reg as mentioned, instead.

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