I see that there is a version of the NCP1117ST50T3G Voltage Regulator for the UNO available in a Low Power version with the part number NCP1117LPST50T3G. Can that be used as a direct replacement for the 5V Voltage Regulator or best just to use the regular one?
Thanks
The pinout looks the same.
Why would you want to go with the LP version ?
I was thinking maybe it used less power when using it with battery power but now that I think of it, the main reason was because it looked like it could do exactly the same thing but I found them cheaper. I didn't understand the datasheet where it said "It is intended primarily for high volume consumer applications over the 0 to 125 degree temperature range."
https://www.mouser.com/datasheet/2/308/NCP1117_D-2307187.pdf
https://www.mouser.com/datasheet/2/308/1/NCP1117LP_D-2316911.pdf
Because the consumer device uses a know current value and no more, where your Arduino can use an unknown maximum because of the stuff that may be attached. Also, a consumer device will be packaged inside some device and all the rest of the components must be able to work up to 125 degree C. Then the consumer device build will use many reels of the regulator and a penny saved when you have to buy 5,000 at a shot, adds up to considerable savings.
Paul
Paul, Thanks for that most excellent answer. I didn't understand when I looked at the datasheets but totally forgot about the possibility of varying current dependent on the loads or project at hand. Makes perfect sense. I am glad I asked before buying the wrong ones.
schemer
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