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新买的77910A怎么不能用?

Other Parts Discussed in Thread: BQ77910A

从天猫网上买了20片77910A,焊在电路板上通信不正常,LDO也没有3.3V输出。

BAT供电为26V,CHGST和ZEDE引脚都上拉电阻到3.3V,应该能正常工作啊。

换上老的芯片就能正常通信,不知道为什么,难道我买到假货了!?

新型号的标识为:

BQ77910A

26TG4

CETR

老型号的标识为:

BQ77910A

31TG4

CDHS