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BQ24210: Termination current for a ICHG < 250 mA?

Peter West1
Prodigy 60 points
Part Number: BQ24210

Hi,


What is the internally set termination current for a ICHG < 250 mA?


I have a 350 mAh battery but with a fast charge restriction to 0.5C so ICHG is 175 mA. In the Jan 15 datasheet, Electrical Specification only gives a value for > 250 mA (8-12%). In para 8.4.5.7 a figure of 20% is given.


Thanks,


Pete

  • 0
    TI__Guru* 76076 points
    Hello
    I will have to check on this and get back to you.
    Typical termination current is 10% of fast charge current, suspect the electrical characteristics table is correct.
    Accuracy of the termination current will probably decrease below 250mA, sense voltage is getting closer to ground and harder to measure accurately. Suspect the 8% to 12% window will get wider.
  • 0 in reply to Bill Johns
    TI__Guru* 76076 points

    Hello
    The termination current is 10% of fast charge current.
    Shift is tolerance (8% to 12%) going from 250mA to 175mA is not going to be that great.