@ccs-hello As you know (probably better than me R2 680k, R1 150k are recommended by the data sheet 0.6V * (1 + 680/150) = 3.32V R2 45.3k, R1 10k are selected by Onion's HW engineer (I wonder who is he/she?) 0.6V * (1 + 45.3/10) = 3.318V - so it's OK. Thanks.