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CC1101无故发热,软重启无法恢复!

Other Parts Discussed in Thread: CC1101

您好,最近生产一批CC1101的无线板卡,CC1101部分参考官方433MHz原理图和PCB设计,测试样板的时候没有出现无故发热问题,这次小批量生产后,部分芯片出现无故发热现象,数量在20%~30%,100块有25块左右,发热时锂电池电压从3.6V拉低到3V,LDO输出从3V拉低到2.3V,这时CC1101收发还正常,但发热经过一段时间后,LDO输出接近0V,板卡无法正常工作。

通过SRES命令reset CC1101没有作用,必须拔掉锂电池重新接插才能恢复正常,有问题的板卡恢复后一天或几天后又无故发热,请问如何查找这个问题或解决?