I am having difficulty with MP2467. I bread boarded the circuit from figure 4 of the datasheet, as attached. The only difference is I have a different enable voltage resistor, but still well within operation when applying 24V, and a 10uH inductor instead of a 15uH.
The output climbs to 12V then over 8 second lowers to 5V, before repeating. It should just be a steady 5V, as shown in yellow.
The blue trace is the feedback pin, which also spikes before dropping to the 0.8V required.
What am I doing wrong?