Do we have characterization on the turn-on and -off time of the LMR16030 enable (EN) feature?
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The EN feature is active when the input voltage Vin exceeds 4V and EN pin voltage exceeds the threshold of 1.2V (typ.), when both of these conditions are met the device is considered enabled and the internal circuitry begins regulating the output to the desired set point.
Figure 23 of the datasheet shows that it takes the device approximately 0.8ms for the output voltage to reach 10% of its final value in response to the EN voltage exceeding the 1.2V threshold.
I am unaware of any such information regarding the turn-off time of the EN feature, one option would be to simulate both the turn-on and turn-off times of the LMR16030 using the simulation files provided in the product folder. The best option would be to test both turn-on and turn-off with an EVM.