LTC4121can't work if the input voltage under 15V.The design is according to the datasheet of LTC4121.But it works only the input is above 15V.It can't work if input under 15V(for example 9V in the schmatic) .please hep me
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LTC4121can't work if the input voltage under 15V.The design is according to the datasheet of LTC4121.But it works only the input is above 15V.It can't work if input under 15V(for example 9V in the schmatic) .please hep me