I have a question about the below circuit of LT3080, what is the purpose of D1?
Is that for discharge C2 when the Vin disappeared?
Because D1 will affect the accuracy of Vout, I do not want to add D1。
Thanks for the post. Yes, the diode D1 you show will affect accuracy. I show how much a silicon diode can leak in the image below. As far as I know, the purpose of D1 is to prevent SET from being held…
This post discusses the need to clamp OUT to SET - usually when a voltage is applied to SET - but your situation may apply as well. The post is titled "LT3083 output not zero when set pin grounded".…