I'm using a step-up converter (MT3608) to convert 3.3V to 5V Output. However, because I don't need the 5V all the time and my device is battery powered, I want to turn off the MT3608 IC through its EN pin (LOW = Off, HIGH = On).
Two questions:
Do I need a pull-down resistor from EN to GND to ensure that the converter doesn't "accidentally" turn on? Here are some characteristics for the MT3608's EN pin:
What value should the pull-down resistor have to ensure reliability and minimum current draw while the converter is powered off?
I'm also using a logic level converter consisting out of a transistor (BSS138) to convert a 5V logic signal to 3.3V. Here I'm using 3 pull-ups (2 to 3.3V, one to 5V) for which I have the same question as above (best resistor value for minimum current consumption whilst maintaining reliability)
Thanks!