UC1903: UC1903

Shamee Shailachandran

Part Number: UC1903

Tool/software:

Hi, It looks like the Ultralibrarian schematic symbol ( in Altium) for UC1903 -fk (LCC part) is completely wrong. There is also no LCC footprint datasheet to check if the Ultra librarian footprint is correct. Any help with the footprint info will be appreciated. Meanwhile, I hope the ultra librarian symbol will be removed or amended.

1 month ago

0 Jesse Villanueva 1 month ago

TI__Genius 13670 points

Hi Shamee,

What is wrong with the altium model? Checking the pin pitches and device dimension based on the footprint documentation below, everything seems correct.

https://www.ti.com/lit/an/snoa023/snoa023.pdf?ts=1722985963863&ref_url=https%253A%252F%252Fwww.google.com%252F

Jesse

0 Shamee Shailachandran 1 month ago in reply to Jesse Villanueva

Prodigy 10 points

Hi Jesse,

Thanks for getting back with the datasheet for LCCC- 20 part. I could not find this detail on UC1903 page ( UC1903 data sheet, product information and support | TI.com ). The one that I found was FK 20 FK (S-CQCC-N) 4229370 (ti.com). It does look l ike the Ultralibrarian and the datasheet for LCCC20 matches.

However, could you please note that the schematic symbol is completely wrong on the Ultralibrarian link that the UC1903 page links to.

Regards,
Shamee.

0 Jesse Villanueva 1 month ago in reply to Shamee Shailachandran

TI__Genius 13670 points

Hi Shamee,

Just to make sure that we are seeing the same issue. You are referring to the schematic symbol having the wrong pinouts as the error, correct?

I will note this issue. Thank you.

Jesse

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UC1903: UC1903