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how to design kw41z ble system with Lithium-ion battery?

Question asked by xie guangbao on May 24, 2017
Latest reply on May 30, 2017 by Gerardo Rodríguez

hi all!

KW41Z supports operation with battery voltage from 2.1 V to 4.2 V in buck mode, but PSWITCH cannot be shorted to VBAT in Lithium-ion battery configurations,  so DCDC can't  automatic and continuous turn on, why is that? 

how to design it and have any reference design with lithium-ion battery?