Help me select photo darlington.

[jayanth.devarayanadurga]

I need a photo darlington single or array with input current of 1 to 60 mA and o/p side current of 500 to 800 mA. Is there any photo-darlington with this specification?

 

[babar_ali]

Hello,
Same problem I faced couple of months ago. I solved this by using the following idea.


Enjoy!!!

 

[jayanth.devarayanadurga]

I know that idea but I need to drive a load which draws 250 mA, so I was thinking it would be better to use photo darlington which can drive 500 mA or 800 mA so that the no. of components can be reduced.

 

[babar_ali]

You can Google for that specs, I haven't seen an opto darlington array with these specs. Any how I hope following links could help you finding the right one! If you found one paste the link or part number here.

http://www.farnell.com/datasheets/2774.pdf

https://www.sparkfun.com/datasheets/Components/LTV-8x6.pdf

http://www.jameco.com/1/3/opto-darlington

http://www.fairchildsemi.com/collateral/solutionguides/Optocoupler-Solutions-Guide.pdf

Enjoy!!!