BQ27Z561-R1: 2S NiMH Support

Jacob Olstad

Part Number: BQ27Z561-R1
Other Parts Discussed in Thread: BQ34Z100-G1

Hi,

It looks like the minimum input voltage of the bq27z561-R1 could support a 2S stack of NiMH batteries. Are the any issues to be aware of when implementing this?

Regards,

Jake

over 5 years ago

0 Wyatt Keller over 5 years ago

TI__Guru** 105590 points

Hello Jacob,

The bq27z561-r1 doesn't support the NiMH chemistry, I wold recommend looking at some of the other gauges designed to gauge NiMH, the bq34z100-g1 is a good option, but I don't think it could do a 2S NiMH application due to low voltage, it could do 3S NiMH.

Sincerely,

Wyatt Keller

0 Jacob Olstad over 5 years ago in reply to Wyatt Keller

TI__Intellectual 1320 points

Hi Wyatt,

I've searched through everything marked for NiMH support. Looks like they all require >2V for operation.

Is there anything I missed?

Regards,

Jake

0 Wyatt Keller over 5 years ago in reply to Jacob Olstad

TI__Guru** 105590 points

Hello Jacob,

I could not find any gauges that work with such low voltage and with NiMH chemistry.

Sincerely,

Wyatt Keller

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BQ27Z561-R1: 2S NiMH Support