Re: Battery power from 1 LIPO and 3v3 regulator LDO can't turn ESP32 on
Posted: Thu Aug 09, 2018 11:47 am
So maybe adjust the converter output to 3.3V - I wouldn't use linear voltage regulators in such case then
ESP32 Official Forum
https://esp32.com/
ESP_Sprite wrote: ↑Tue Aug 07, 2018 3:39 am- HT7333 chips can only output 250mA. You need at least 500mA to be able to provide peak power for the RF bits in the chips.
- The dropout voltage of this chip can easily reach >1V (@250mA) which means the ESP32 and the flash chip will only get 2.7V. While the ESP32 likely is OK with it, this browns out most flash chips leading to crashes.
Suggest you try a different LDO. Not an official suggestion, but I personally have good experiences running the ESP32 from a HT7833.
I generally use the SOT89 package indeed. The 0.21W may possibly be OK for the SOT23 if you make sure the chip has a nice and large ground plane to sink the heat into.