Hello,
I am attempting to use the LM3433 dimming circuit with the bypass FET that shunts loop current away from the LED to provide dimming. I am using off-times of about 500 nsec for this FET at the dimmest settings and finding that this yields rounded-off edges on the gate-source voltage transition. This makes the dimming performance unreliable.
The FET I'm using has a typical gate charge of 29.6 nC. I do not see a drive current rating specified for the DIMO/DIMR pins so I was wondering if there was some guidance available or a recommended setup.
Thanks,
Arthur