BC118 Minimum operating voltage

Hey All,

We’re using BLE 4.0 BC118. When we started development we saved a datasheet that lists the supply voltage as “3.3V to 4.7 V DC (Supports Li Ion battery voltage range)”. The datasheet currently on the Sierra website is for the BLE 4.01 version of the BC118 and lists the supply voltage as “1.8V to 3.6V DC (Supports Lithium battery voltage

Is the supply voltage actually different between these two versions? What is the actual minimum for the 4.0 version of the chip? We’re using it on regulated 3.3V so I want to make sure there’s some margin for regulator tolerance.

Not sure if this is the same scenario that is in this thread:



I have looked through the documentation (both Bluecreations and Sierra) and they both indicate a supply voltage of 1.8V to 3.6V. The 4.0 and 4.1 is just the BLE version it is compliant with nothing to do with a chip version number, the hardware has always remained the same.




Thanks for the heads up, I’ll share this with the team.