Can someone help me with a high side mosfet switch?
The MCU is 3.3V logic. +BATT is a single cell LiPo, so 4.2V down to, say, 3.6 or so.
Can I use a MOSFET such as the BSS308PE to avoid a high-side driver transistor or MOSFET? It has a Vgs of 2V.
So, when pulled/driven high at 3.3V, worst case with a fully charged LiPo, we have 0.9V Vgs, so the MOSFET will remain off. When pulled low, we have (worst case) 3.6V which is plenty to drive the 30mA load.