BQ27426和BQ27546-G1区别

看了数据表之后发现BQ27426是有配置文件配置不同的化学参数，，而BQ27546-G1就只有一个标定的功能，这两者有什么区别呢？还有这两款芯片，又有什么区别？

BQ27426的chemistry_ID只支持3种预编程好的ID

BQ27546-G1没有这个限制。

顺带问下，这两款芯片，具体应用上有什么主要区别呢？谢谢！

BQ27426这个芯片比较特殊，你看一下下面的说明。

For the ROm based gauge, namely the bq27426, you will need a non-volatile memory to store the learned capacity and resistance tables of the cell. Also, it comes pre-coded with 3 default chem -ids which you must chose one which closely matches your cell. It has RAM parameters which are configurable as well for your application, however if there is a POR, all the parameters configured returns to default and you loose all learned values hence the need for NVM.  There really isn't any significant benefits  of a high side current sense over the low side and vice-versa.