I have a constant current LED driver that delivers 300mA to my LED lights. It's used on a car and uses the cars 12V supply. It's been working fine until now when the weather has turned cold the LED's are flickering and it seems to stop once it has warmed up.
I dont think it is the drivers themselves because i have the exact same driver powering another LED light on the car with a ready made voltage regulator. Whereas the one that is flickering, I have a low drop-out LM2940CT 12v regulator with a 22uF Low ESR 105°C capacitor as the datasheet says. I am wondering if this low ESR capacitor could be causing the problem? The datasheet of the LM2940CT says that ESR operating temperature will drop significantly when cold.
I dont think it is the drivers themselves because i have the exact same driver powering another LED light on the car with a ready made voltage regulator. Whereas the one that is flickering, I have a low drop-out LM2940CT 12v regulator with a 22uF Low ESR 105°C capacitor as the datasheet says. I am wondering if this low ESR capacitor could be causing the problem? The datasheet of the LM2940CT says that ESR operating temperature will drop significantly when cold.