Input voltage for Adafruit BME280 Humidity + Barometric Pres

[Alessandra]

Hello!

I need a temperature sensor that fixes the voltage so that the temperature reading does not change depending on how charged the li-ion battery is. I was looking at the Adafruit BME280 Humidity + Barometric Pressure + Temperature Sensor Breakout because it was the only one I found that seems to have an on board voltage regulator.

So my question, can I use a li-ion battery as input (whose voltage ranges from 3.6-4.2) and then the sensor will automatically regulate it down to 3.3v or does it need to be 5v specifically? It wasn't clear to me on the product page.

I need to order this asap if this is true, so a quick reply would be so so appreciated! Thanks in advance!!
Alessandra

[adafruit_support_carter]

The voltage regulator is a MIC5225-3.3. Datasheet here:
http://ww1.microchip.com/downloads/en/D ... ic5225.pdf
which indicates input voltage range can be 2.3V to 16V. So you should be good. Check datasheet though for any other details that might matter for your application.

[Alessandra]

Ok great, thanks!!