ld117 voltage regulator id

[shaunbt123]

hi there can someone please help me with some info on this voltage regulator
the markings on it are as follows
LD1117
LA DA OL

i can see lots of datasheets with the ld1117 but cannot find a match with the la dl ol.


thank you.

[mariushm]

Re: ld117 voltage regulator id

LD1117 or anything that ends with 1117 is a linear regulator.

Now, there's adjustable 1117 regulators or fixed voltage 1117 regulators which output a particular voltage (for example 3.3v, or 5v).

The LA DA OL doesn't tell you anything, it's an internal code of the factory telling it a batch number, and/or year+month+day , or for a particular manufacturer the adjustable output version may say LA while the 5v fixed voltage version may say L5.

You just have to determine if you have the adjustable version or a fixed voltage version.

Determine the pinout (which pin is input, which is output, which is ground/adjust) which should be the same for all 1117 regulators in that package.

See page 6/44 in the datasheet : https://cdn.badcaps-static.com/pdfs/...5381d7fe9b.pdf

Then, see if there's some resistors between ground and output, if it's an adjustable output voltage version there should be two resistors, like on page 24/44 in same datasheet.

If you see those resistors, you can get any adjustable output voltage 1117 in the same package as yours.

[shaunbt123]

Re: ld117 voltage regulator id

thank you for your reply
it looks as if it an adjustable voltage regulator,those letters were causing me some real confusion,thanks for your advice.

[klcureton]

Re: ld117 voltage regulator id

Very useful, thank you.

[budm]

Re: ld117 voltage regulator id

Calculator on post 6:
https://www.badcaps.net/forum/showth...999#post300999