as the enable pin is pulled up to Vin (around 11V-13V in my case), it is probably not a good idea to drive the “En” pin directly by a micro-controller?
The micro-controller can certainly sink enough current when the pin is driven low (pullup is 270k) , but when the uC’s pin is in high impedance state the pull-up should cause a voltage of Vin at the pin, which is far beyond the ratings of the 3.3V uC.
Of course, I could connect a not-too-large resistor between En and ground, just large enough to keep the voltage on En above 1V and small enough to keep it below 3.3V. Or remove the pullup-resistor from the regulator as described in this post Disable DV24VxxF5 pull-ups on ENABLE pin?
Any hints? Kind thanks