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Help with RGB led driver?

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varunperumal

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Hi all,

I am trying to design a super compact board with 32 on board rgb led's. The size of the board is about 1.5"x1.5". the maximum current through each led is 30ma and only one led is "on" at a time. I need to represent quite some colours as well

Any ideas or suggestion on how to go about doing this. Space is a real constraint. For now i am thinking of using a common anode configuration with the adg732 to switch the vcc to the anodes as necessary. now i need to have a low side driver to do the colour mixing, any suggestions ?

The entire system is powered from a lithium ion battery (3.7v) . For now i have found the following ic ncp5623 but it is not available where is live

Thank you very very much in advance....

Sincerely
Varun
 
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