You are reading a single comment by @allObjects and its replies.
Click here to read the full conversation.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@allObjects
...that's why the DC/DC Inrush Current I_PEAK - 30..90 mA - on power up is worst case more than 10 fold to the normal operation power 4..8 mA; and after power down, the discharging has to happen to not reverse-feed and destroy components. Limiting the rush-in current to not bleed the battery can be paid with longer refresh time... not a big penalty as @Jean-Philippe_Rey experienced. 30 to 90 mA can definitively not reasonably be driven just by GPIO pins... I already had trouble to get a stable supply for an uBlox GPS....