ESP32-H2 SuperMini current consumption

St-Ivoda
Posts: 3
Joined: Thu Aug 14, 2025 2:35 pm

ESP32-H2 SuperMini current consumption

Postby St-Ivoda » Thu Sep 18, 2025 7:33 am

Hello everyone! I'm trying to find the most efficient power consumption formula for ESP32 microcontrollers, and after some research, I've chosen the ESP32-H2 SuperMini.
According to the datasheet, this microcontroller consumes no more than 10 µA in deep sleep mode, but after measuring the consumption with PPK2, I got ~880 µA. This board has a charger chip, which I successfully desoldered (as well as the LED), but the consumption changed minimally (~80 µA).
I highly doubt the LDO on the board is the problem. I have no idea why the consumption is so high, so I'm asking for your help.

Example program - Deep Sleep Example, which I used to measure.

ves011
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Re: ESP32-H2 SuperMini current consumption

Postby ves011 » Fri Sep 19, 2025 9:08 am

If your board has a LDO, most likely this is the cause. With 800 uA quiescent current is a pretty good one.
e.g. AMS1117 has 5 to 10 mA quiescent current. Also you need to consider 0mA baseline of the measurement tool.
I measured deep sleep current for a esp32-S3-WROOM-1 module and found it inline with the datasheet. 18uA (with a 10uA baseline) measured vs 8uA datasheet, so i expect H2 to be in the same range.

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