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BQ25185: JEITA profile

João Rego
Intellectual 286 points
Part Number: BQ25185
Other Parts Discussed in Thread: BQ25180, BQ25176J, BQ25120A, BQ25170J

Tool/software:

Hello,

Does the BQ25185 have a JEITA profile when charging? I am asking because although mentioned on the IC page, the datasheet doesn't have any reference to JEITA.

Thank you.

Best regards,

João Rego

  • 0
    TI__Expert 8355 points

    Hello João,

    The BQ25185's TS function is configured to only monitor (1) the cold battery threshold and (2) the hot battery threshold. Please refer to section 8.3.9.1 of the BQ25185 datasheet.

    Alternatively, the BQ25180 can be configured to meet JEITA requirements, as it monitors the (1) cold, (2) cool, (3) warm, (4) and hot battery thresholds.

    Here is a useful Application Note on this topic: Maximizing the Full Potential of NTC Using BQ25180 Linear Charger

    Best regards,

    Alec Lehman

  • 0 in reply to Alec Lehman
    Intellectual 286 points

    Hello Alec,

    Then, maybe it would be beneficial to update the BQ25185 web page. The page mentions the JEITA profile as well during the filter search.

    Regarding the BQ25180, my only issue is that I am looking for a standalone configuration (resistor configuration). The BQ25180 is configurable by I2C. Do you have any recommendations for a charger with a JEITA profile, a standalone configuration, and a power path?

    Thank you.

    Best regards,

    João Rego

  • 0 in reply to João Rego
    TI__Expert 8355 points

    Hello João,

    It appears there is a mistake on the product page - thank you for pointing that out.

    I would recommend looking at our switch-mode buck chargers for a standalone charger with a JEITA profile and power path.

    Check out the BQ25616J (the "J" version has JEITA support): https://www.ti.com/product/BQ25616

    Please let me know if you have any additional requirements.

    Best regards,

    Alec Lehman

  • 0 in reply to Alec Lehman
    Intellectual 286 points

    Hello Alec,

    Thank you for your suggestion, but because of space constraints, I would rather use a linear charger. Do you have any linear chargers that fit all the requirements (standalone, JEITA, and power path)?

    Best regards,

    João Rego

  • 0 in reply to João Rego
    TI__Expert 8355 points

    Hello João,

    Most of our linear chargers that fit those requirements are controlled by I2C or only do TS Hot/Cold monitoring. 

    However, we do have a few options which are close:

    BQ25176J: https://www.ti.com/product/BQ25176J

    This is a standalone linear charger with JEITA support, but it does not have power path.

    BQ25120A: https://www.ti.com/product/BQ25120A

    This is a linear charger that supports standalone functionality, but it may have more features than needed for your application.

    Please let me know if either of these chargers could work for you.

    Best regards,

    Alec Lehman

  • 0 in reply to Alec Lehman
    Intellectual 286 points

    Hello Alec,

    Thank you for your recommendations.

    We are currently testing the BQ25170J, which appears similar to the BQ25176J (the latter has a higher input voltage).

    Although the BQ25120A has more functionality than is needed, I think I can make use of these added features. I will take a closer look at the datasheet, but it seems interesting at first glance.

    Best regards,

    João rego

  • 0 in reply to João Rego
    TI__Expert 8355 points

    Hello João,

    Yes, the BQ25170J and BQ25176J belong to the same BQ2517x family of chargers, so they are quite similar but differ in some features.

    Please let me know if you have any questions about BQ25120A or anything else - I'd be happy to help.

    Best regards,

    Alec Lehman