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BQ25703A: 3S/4S Lithium-ion charger IC with fuel guage

Patrick Moniqui
Prodigy 30 points
Part Number: BQ25703A
Other Parts Discussed in Thread: BQ25798

Hello, 

I am currently testing the BQ25703A to charge my 3S lithium ion battery pack and it works very well.

However, it lacks some features such as charge termination current and has low resolution reading for charge/discharge current. I also need to estimate the SoC but it doesn't have such feature.

Upon some research, I found a candidate design that could fulfill my need which is: BQ25798 (charger IC) + BQ24Z100-R2 (fuel gauge). The lithium ion battery pack will vary from 3S-4S and 800mAh-8000mAh.

Is there any IC that integrates both battery charge and fuel gauges capabilities? If not, is this design suitable for my needs.

Thank you,

Patrick



  • +1
    TI__Genius 16290 points

    Hello Patrick,

    Patrick Moniqui said:
    Upon some research, I found a candidate design that could fulfill my need which is: BQ25798 (charger IC) + BQ24Z100-R2 (fuel gauge). The lithium ion battery pack will vary from 3S-4S and 800mAh-8000mAh.

    I recommend this option based on the requirements of your design, because we do not have any IC's with battery charge and fuel gauges capabilities with your requirements.

    Best Regards,

    Christian.