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Using Bq2040 for 5 lithium cells

Other Parts Discussed in Thread: BQ2040

1.I am trying to use BQ2040 with 5S LI-cells by selecting R5=909K, R4=100K & R11= 1M. My max battery voltage will go upto 22.5 V. I checked Vcc also, it is range also.

Is there any other factor which I have to change also in EEPROM & hardware .

 

2. In Bq2040 datasheet it is written on pressing DISP switch, led will be activated for 4 sec. But in board led glow only momentarily. As soon as I open the switch, led switch off.

My board schematic is same as EVM. I also checked cap across led it is fine. What could be the possible error.

 

Thanks & Regards

Deepak Bansal