I am looking to drive 4 strings of LED at 100ma, ~21V. I need to be able to provide 50% dimming when a room is sensed to be occupied via say an PIR. Assume the input the circuit is a simple logic single and I want to be at either 100% or 50%. I was looking at the LM3463 and using the analog dimming control, thinking that I could switch in a different resistor value to change the voltage at the Ioutadj pin. Is this what you would recommend?
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