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BQ77905: Confirmation

Genius 9880 points
Part Number: BQ77905

Hi Team,

There are some items that our customer want to confirm, please see details below.

1. When connecting the voltages to VC1 through VC5, does it matter what sequence these are connected to the battery? Will there be issues if we connect VC4 to cell 4 and then connect VC2 to cell 2, or do these connections need to be made in the following sequence: AVSS, VC1, VC2, VC3, VC4?

2. Max voltage for LiFePO cells is typically 3.65V/cell, the BQ7790521 is set up for 3.7V/cell. Is there a reason that this is greater than the 3.65? Is there a version that is set up for LiFePO chemistry?

3. What should we do with the pins that are shown as no connect. In the 8s configuration, should these be tied to GND? CHGU, CCFG, CHG or left floating?

Thank you.

Regards,
May