Xiao ESP32C3 - 700ma from 3v3 pin? Is that a typo or is that for real?

Products & Technology XIAO
#1

Good day,

I am really surprised to read that it is possible to draw up to 700 ma from the 3v3 pin. That seems huge to me.
I was cautious and I had an L298n to play as a buffer between the Xiao and a 3v-200ma piece of electronics, but maybe I do not need it any longer ?

Source :Getting Started | Seeed Studio Wiki
Printscreen :

3v3
3v31069×798 60.7 KB

Could someone confirm ? Or is that a typo and it should read 70ma instead ?

Thank you

Philippe

#2

HI,

From the schematic

image
image925×412 26.3 KB

1 Like
#3

If you look at the Seeed Studio XIAO ESP32C3 Schematic, the LDO is a XC6210B332MR from Torex.

The product page and datasheet or the XC6210 read

Maximum Output Current : More than 700mA
(800mA limit, TYP.)
(1.60V<VOUT<5.00V)

Now, keep in mind the ESP32-C3 current consumption peaks at 335mA, according to section 4.6.1 RF Current Consumption in Active Mode of the ESP32C3 datasheet.

1 Like