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Powering LPCXpresso54114 Board from LiPo

Question asked by James Whitney on Oct 23, 2019
Latest reply on Oct 25, 2019 by James Whitney


In a bit of a rush so don't have time to do the usual DC-DC converters - either up, i.e., less than 5 V to 5V, or down, i.e., regulators from greater than 5V to 5.

My question is, if I wire up a USB connector to supply battery power only, i.e., device already flashed, does a 3.7 V LiPo battery have enough voltage differential to actuate the 3.3 V LDO regulator ?

I have tried going into header JP9 with a LiPo 'post-flash', but it would seem that the battery would have to be disconnected to re-flash the device.

Please advise.