Hello,
We have an application where we would like to have a fine current control (<0.1mA step change) for the full range of 75mA.
Is it possible to parallel up CHx from device A with CHx from device B to achieve a coarse and fine current control of the same LED?
Device A would be set up to be 75mA full range, giving the coarse current setting. Device B would be set up to be 10mA full range, giving the fine current setting.
The idea would then be that the total current through the LED will be given by:
LED_Current = ( 75mA * (A/255) ) + ( 10mA * (B/255) )
Is there any reason that could lead to the devices conflicting?
Thanks for your time.
Best,
Hugo
