our customer has designed a prototype of a charger of 8-cell LiFePO4 battery based on the design files of a demokit DC2038A and selected the PN: LTC4162EUFD-FST. After the start of the battery charger it becomes very hot and blows.
Is it ok to use this PN for the charging an 8-cell battery? How to avoid a critical temperaure increase?
Also what is a difference between LTC4162EUFD-FST and LTC4162EUFD-FAD? Maybe we should take -FAD version?