low cost 20mA LED driver
Posted by: markbar
on
Hi looking to design a low power LED driver constant current 20mA up to 150Vdc any device or design recomendations?
As always cost is a big issue.
Regards
Mark
Hi looking to design a low power LED driver constant current 20mA up to 150Vdc any device or design recomendations?
As always cost is a big issue.
Regards
Mark
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Hi,
Attached is the simplest driver you can use:
http://www.powerint.com/sites/default/files/PDFFiles/der92.pdf
You can replace the input rectifier to full bridge so that the effect of line input frequency will be negligible.
For tighter CC you can use the sample in table 2 of this data sheet.
http://www.powerint.com/sites/default/files/product-docs/lnk302_304-306.pdf
This is the cheapest and simplest you can utilize.
Regards....