Hello,
I have a LED driver application where I need to run a lot of current. The highest current part I found for 48V in, 42V out is the LM3409HV. Application will be using Iadj fed by a DAC for current controlled dimming, and no PWM which makes it a little simpler. So a couple questions:
1. Is 5A indeed the maximum LED circuit drive current that this part can handle? Ideally we want higher, like 8A or so.
2. We'll most likely end up using multiple LM3409HV circuits, each with 48V in, 42V out, 5A current. Is there someone at TI who can help me with the component values? I figure that some FAE there probably put all the equations into a spreadsheet and can pop out a design fairly easily.
3. What should the operating frequency be? We'll be using four of these circuits in each product, so is it better for each to have a slightly different frequency, or will it pretty much end up that way anyway?
Thanks,
Derek
