Part Number: BQ77904 Other Parts Discussed in Thread: BQ77905
Tool/software:
The datasheet seems to contradict itself in three places.
The title says "3S to 20S ".
Page 1 shows OV/UV thresholds low enough for a 1S pack.
"Overvoltage: 3 V to…
Part Number: BQ77904
we are keen on seeking additional assistance to tailor the BQ77904 ICS to our specific application, particularly catering to the LiFePO4 chemistry. Could we kindly request your support in modifying the product to align with the…
Part Number: BQ77904 Hi team,
Do we have any input bias current characterization for the CTRC/CTRD pins?
Or conversely any output leakage current from the CHGU/DSG pins?
Thanks,
Jacob
Part Number: BQ77904 Hi,
one of our customers has inquired about OCD2 threshold setting of BQ7790400. Can you advise, please?
It looks like this specification has been removed accidentally while reformatting the Device Comparison table in the latest…
Part Number: BQ77904 Other Parts Discussed in Thread: BQ77905 I have an application currently using the BQ77904 in a 4-Cell configuration with Samsung INR18650-35E batteries. The protection seems to work as intended during fast charging with all cells…
Part Number: BQ77904 Hi,
See the schematic below. Will this circuit protect the individual cells from reverse charge if one or more of the cells are inserted in wrong direction? Or do I need to add extra protection across each cell, e.g. diodes in parallel…
Part Number: BQ77904 Hi,
I am currrently working on a 6 series battery management system using 2 BQ77904 in series. Each device has 3 cells and LD pins are connected to the GND with 470k Ohm Resistor and Diode. When the battery has overcurrent fault…
Part Number: BQ77904 Hi Expert,
If bq77904 got the UV and the charger's battery detection waveform as the below picture, does it any risk to unlock bq77904? Thanks!
