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Topic starter
2021-09-19 11:57 pm
I read online about a guy replacing a blown Voltage Regulator on an Arduino UNO and decided I would order some VR's for future projects where I take the processor to another board to reuse the UNO. So I see where you can make a minimalist version of an UNO with a few parts in the order of the ATMega328P, a crystal in some cases and in others not needed, some caps, and maybe an LED and a resistor. One way shows the USB to TTL convertor where another does not. Anyhow, I find a great deal on some Voltage Regulators but also found an even better deal on some others that the part number has an "LP" in it but otherwise the same and from the same manufacturer.
NCP1117ST50T3G
vs
NCP1117LPST50T3G
I will attach links to the datasheets but from what I can tell (not an expert here) I should be able to us the low power version as a direct swap. Correct me if I am wrong. 😛
https://www.mouser.com/datasheet/2/308/NCP1117_D-2307187.pdf
https://www.mouser.com/datasheet/2/308/1/NCP1117LP_D-2316911.pdf
Thanks!
Thanks,
Voltage
Topic starter
2021-09-20 8:47 pm
I got my answer elsewhere but thought I would post it here in case it helps someone else. The Low Power version has a fixed current and is used for known consumer version devices. That allows the producer to save money when he buys them in 5,000 pieces rolls etc. In my case, the current will vary depending on the project I build it for just like the way an UNO works as it doesn't know what you are going to build. So the answer is NO to using the Low Power version as a direct replacement to the original part number.
Thanks,
Voltage
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