BQ25756: Parallelization of multiple BQ25756

Michael Huang

Part Number: BQ25756

Tool/software:

Hello,

Is the Bq25756 i2c addresses fixed at 0x6A? It was mentioned in the forum previously that two Bq25756 can be paralleled, but can we adjust each's programming parameters if both have the same I2C address?

Regards,
Michael

2 months ago

+1 Ethan Galloway 2 months ago

TI__Genius 17230 points

Hello Michael,

If possible, you can use the the BQ25756 and BQ25756E in parallel. The BQ25756E has a different I2C address from the BQ25756.

I don't think you can put 2 BQ25756 ICs on the same I2C line because the BQ25756 needs to send an ACK signal to the controller. If you need to use 2 BQ25756 ICs, I recommend using an I2C mux to talk to both ICs.

Best Regards,
Ethan Galloway

0 Michael Huang 2 months ago in reply to Ethan Galloway

Prodigy 20 points

Ok that makes sense, thank you Ethan.

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BQ25756: Parallelization of multiple BQ25756