LED constant current driver

[Externet]

Complexities, complexities... Keep it simple !
----> https://www.digikey.com/product-detail/en/NSIC2020BT3G/NSIC2020BT3GOSCT-ND/3694474

 

[Mosaic]

That's a nice part. Looks like a super reliable approach.
A little pricey at the hobbyist volumes compared to the previous circuits. But has greater power capacity, which isn't required for my app.

 

[ronsimpson]

Does anyone have a circuit for a running a 7 segment display with a transistorized constant current driver that permits a single resistor to set the current for all the segments?

Complexities, complexities... Keep it simple !
----> https://www.digikey.com/product-detail/en/NSIC2020BT3G/NSIC2020BT3GOSCT-ND/3694474

Too simple. It does not allow a single resistor to set the current for all the segments.