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Topic: uln... darlingtons (Read 598 times) previous topic - next topic


i'm on my phone and its a job and half looking through a ton of datasheets on here...

what's the most powerful (current not voltage) version of the chip that can be bought (sinking 14-15v MAX)

cheers :)



You'll need to find the newer MOSFET versions of that chip - all darlingtons are heat-dissipation limited in a DIP package,
so unless you can find a version with a metal heat slug they are all basically the same.

I'd avoid darlingtons these days, they were a good solution to high-current switches in the 70's, but MOSFETs are generally
superior and widely available now (but unfortunately mainly in SMT packaging).  As I said I know there are a few MOSFET
based ULN2803 replacements thesedays, can't remember the part number.
[ I will NOT respond to personal messages, I WILL delete them, use the forum please ]

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