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bq24192 - Difference in output filters in datasheet

Bryan McLaughlin
Intellectual 985 points
Other Parts Discussed in Thread: BQ24190, BQ24192

Page 4 and 5 of the bq24192 datasheet show the connection examples for the bq2419x chargers. All use L=2.2uH and C=20uF except for the bq24190 example, which shows L=1uH and C=40uF. 

Is there a reason for the difference?

Thanks,

Bryan

  • 0
    TI__Expert 3160 points

    Hi Bryan,

     

    All of the bq2419x family parts can be used with a 2.2uH or 1.0uH inductor.  The bq24190 typical application example is just showing the alternate external component option.

    Some customers prefer the 1.0uH inductor because you can find them in a thinner form factor, but you do have to add additional output capacitors which does add some cost.  

      

    Thanks!

    Rachel