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BQ24725A真伪?



调试BQ24725A,一直不能充电,HIDRV一直为高,LODRV一直为低,没有驱动脉冲。其它情况如下:

1、硬件状态:VCC=23.3V;VSRN=15.8V;ACDRV=15.8V(ACFET关闭);BATDRV=22.0V(BATFET打开);VACDET=2.9V;VACOK=3.3V;VILIM=3.3V。

2、内部寄存器状态:DeviceID=0x0008H(与Datasheet不符,不是0x000BH);ManufactureID=0x0040H(正确);ChargeOption=0x7904H(未写过,与Datasheet上的POR值不符,且ACOK状态与硬件输出不符);设置的ChargeVoltage=0x4010H;ChargeCurrent=0x0380H;InputCurrent=0x0400H。

焊接两块板,结果都一样,是什么原因?芯片是假的(DeviceID不对)?