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请教LMZ10504反馈电阻开路问题

Other Parts Discussed in Thread: LMZ10504

如图所示,LMZ10504在系统正常工作电流约500mA。批量使用过程中偶现反馈电阻R48(24K)烧损问题,导致输出电压只有0.8V。翻阅器件资料,也没发现影响该电阻的因素。想请教各位大虾,R48烧损的原因是什么?该如何规避?谢谢!