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Query Regarding Li-ion Battery Charging IC Options and JEITA Profile Compatibility

Sharu N
Prodigy 40 points
Other Parts Discussed in Thread: BQ21080

Dear Texas Instruments Team,

I am currently working on a project that involves the integration of a Li-ion battery charging IC for a device equipped with two 3.7V, 250mAh Li-ion batteries, powering a load with a maximum draw of 60mAh [more here].

My intention is to utilize separate charging ICs for each battery, each with power path capabilities, protective features, and battery monitoring with temperature sensing (TS).

In the course of my research, I've come across two distinct battery monitoring profiles: the JEITA profile and the hot/cold profile. I have a question regarding these profiles:

1. Is adherence to the JEITA profile a mandatory requirement for selling products in Japan? Can I achieve compliance with Japanese guidelines using a charging IC configured for hot/cold temperature charging?

I'm inquiring about this because I've noticed that Texas Instruments offers limited options that combine the JEITA profile with power path functionality. In instances where such ICs are available, they tend to be relatively expensive or have limited stock availability. Given that I need to use two charging ICs for my application, the cost implications become a significant concern.

I would greatly appreciate any insights, recommendations, or alternative approaches that could help me navigate these challenges effectively and cost-efficiently.

Thank you for your assistance and expertise.

Best regards,
Sharu

  • +1
    TI__Mastermind 23220 points

    Hi Sharu,

    Since you've mentioned 250 mAh as well as power path, this puts you in the linear charger category. A good device that's cost effective would be the BQ21080. It's an I2C device and can be configured in software for JEITA or just HOT/COLD. This can help with complying with JEITA or HOT/COLD.

    I do not believe JEITA is required but regulation to ensure the safety portion of your device may need to be checked among other requirements. 

    Best Regards,

    Anthony Pham.