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BQ40Z50-R1: BQ40Z50-R1

Part Number: BQ40Z50-R1

   请教一下,如图MOS管Q3 的源极(S)和漏极(D)短接起来,然后将电池输出的正负极进行短路测试,发现Q2的栅极没有高电平,Q2没有处于导通状态,持续短路很快MOS就烧了,这是为什么,IC没有出现掉电,通讯都是正常的。