Get 5uA current with the esp32 devkit

fer_di
Posts: 1
Joined: Sat Dec 15, 2018 4:39 pm

Get 5uA current with the esp32 devkit

Postby fer_di » Sun Dec 16, 2018 3:10 pm

Hello,

The Esp32 datasheet specifies that the "hibernation mode" (RTC On only) consumption is 5uA.

However I can't find any Deep Sleep tutoriel using the Esp32 devkit getting under 150uA.
This article even explains that ESP32 consumption can't get under 10 mA using dev board.
(https://www.instructables.com/id/Batter ... SP-Design/)

Do you know if the 5uA consumption goal is achievable on Esp32 devkit ?

ESP_Sprite
Posts: 8926
Joined: Thu Nov 26, 2015 4:08 am

Re: Get 5uA current with the esp32 devkit

Postby ESP_Sprite » Mon Dec 17, 2018 2:58 am

It depends on the devkit. For instance, a fair amount of devkits use AMS1117 voltage regulators, and as these have a quiescent current of 5mA average (and up to 11mA max), you'll never be able to get anything under that.

User avatar
rudi ;-)
Posts: 1698
Joined: Fri Nov 13, 2015 3:25 pm

Re: Get 5uA current with the esp32 devkit

Postby rudi ;-) » Fri Jan 04, 2019 9:53 pm

happy new year together,

yeap - this is true.
credit_lastminuteengineers.com.png
credit_lastminuteengineers.com.png (25.81 KiB) Viewed 3148 times
@fer_di, tip: there is a very good ilustrated article about here.
hope this helps

best wishes
rudi ;-)
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