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BQ35100: Chemical ID for ER26500 battery for BQ35100 chip

bitou
Intellectual 390 points
Part Number: BQ35100

Hi,

I want to set configure the BQ35100 chip for my battery ER26500. However, in TI Battery Management Studio 1.3.54.1, I couldn't find the reference of my battery (ER26500) or the type LiSoCI2.

In BQ35100 datasheet, I read that the chip is compatible with LiSoCI2 battery:

So what chemical ID should I choose for my battery?

Cheers,

  • 0
    TI__Guru* 76230 points

    Hi Bitou
    You can use the default chem id on the chip.
    thanks
    Onyx

  • 0 in reply to Onyx Ahiakwo
    Intellectual 390 points

    Thanks for your reply.

    So I don't need to change the chemical ID which is shipped by TI? [1]

    During production, the chip will be configured by I2C in my case, I found some documentation in the Technical Reference so I need to:

    • Enter calibration mode with given I2C command and in ACC Mode and do:
      • 1. Perform Voltage Calibration.
        2. Perform Current Calibration.
        3. Perform Temperature Calibration.
    • Set the CHEM ID (leave it to default in my case)
    • Reset the Chip
    • Set "Operation Config A" to select Li-SOCI2 in GMSEL reg. But I didn't find how to write "Operation Config A" by I2C, I didn't find an I2C command ? [2]
    • Then follow End-Of-Service procedure mode to start measurement

    So could you tell me more about [1] and [2] reference in my previous text please?

    Cheers,

  • 0 in reply to bitou
    TI__Guru* 76230 points
    Hi Bitou
    pls see app note below on how to access and write to registers of the data flash.
    www.ti.com/.../slua801.pdf

    thanks
    Onyx