I have designed a product around the LM3409 to generate regulated positive currents that is working great. I now have another project where I need to generate a negative current to drive LEDs that have their anode grounded.
I know that I can do this with many standard controller, but I would like to use a constant on-time or a constant off-time controller.
Does anyone know if TI has a device that I could use to do this?
Thank you, David
