BQ34110: Schematic review for single cell battery

Muthuvel K

Prodigy 50 points

Part Number: BQ34110

Tool/software:

Hi,

Attached Battery monitor IC design for single cell battery.

let us know any changes required.

questions:

for single cell battery REGIN directly connect to BAT +

how to connect LEN pin ?

Thanks,

Muthuvel K

over 1 year ago

0 Diego over 1 year ago

TI__Mastermind 26875 points

Hi Muthuvel K,

The LEN pin is used to control an external voltage divider.

Nothing was attached, I assume you meant to attach a schematic, please share the schematic if possible.

Regards,

Diego

0 Muthuvel K over 1 year ago in reply to Diego

Prodigy 50 points

Hi Diego,

Attached schematic...

Thanks,
Muthuvel K

0 Diego over 1 year ago in reply to Muthuvel K

TI__Mastermind 26875 points

Hi Muthuvel K,

I don't see a sense resistor on SRN/SRP.

I2C lines will need pullups if you want to communicate i2c.

TS pin will need a thermistor tied back to reg25 if an external thermistor is going to be used, an external thermistor on the battery pack is recommended.

Reg25 should not be tied to the battery.

Please reference the EVM schematic. bq34110 Multi-Chemistry CEDV Battery Gas Gauge for Rarely Discharged Applications datasheet (Rev. B)

Regards,

Diego

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BQ34110: Schematic review for single cell battery