Hi there!
I am using a LMR16006YQ5DDCRQ1 incl. the circuit in the data sheet for supplying my pcb's with atmega328 or atmega2560.
The problem is: The pcb's can be used normally but when programming the atmega processors I need to use an external power supply for 5V because it does not work with the LMR16006YQ5DDCRQ1.
I don't really know why...
The LMR16006YQ5DDCRQ1 is designed for 0.6A and I am using less than 0.133A at 5V (no peak current) while programming (measuring from labory supply). I also tried to connect the GND but it din't change anything.
Does anybody know why?