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Topic: 3v regulator needed (Read 606 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

You can use:
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

Note:
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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