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BQ25895: BQ25895 BTST capacitor

Srishtik Bhandarkar
Prodigy 50 points
Part Number: BQ25895

Hi,

I have designed a circuit using BQ25895 to manage and charge a single Li-ion battery. I have also ordered the parts for the same. Today I received the parts and found that by mistake I have ordered 4.7nF cap for BTST and not 47nF. The closest value cap that I have is 100nF.

Will there be any problems if I populate 100nF instead of 47nF?

Will the circuit work as intended or will there be significant problems?

Thanks,

Srishtik.

  • 0
    TI__Genius 15020 points

    Hi Srishtik,

    I cannot guarantee proper functionality of the charger IC with a 100nF capacitor. The device may still operate but could have reduced efficiency. Our datasheet specs and testing do not account for different BTST capacitor choices.

    I would not recommend using a capacitor over twice the recommended value as you might run into issues with switching speed and by extension, issues with the charging process or output stability. If a 100nF capacitor must be used, make sure to test the extreme limits of your application to make sure the altered component can function correctly.

    Regards,

    James