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BQ25890H: ILIM values

Steve Fenwick1
Prodigy 250 points
Part Number: BQ25890H
Other Parts Discussed in Thread: BQ25890,

The data sheet mentions a 260 ohm resistor, which is a very non-standard. I'm assuming 261 is what was intended?

Also, in section 8.2.13 "Input Current Limit on ILIM", is the note "KILIM = 390 max.". But in table 7.5, KILIM has a listed max value of 285. Which is correct?

Thanks!

Steve

  • 0
    Prodigy 250 points

    I should have written "385" for KILIM max from table 7.5.

  • 0 in reply to Steve Fenwick1
    TI__Mastermind 21615 points

    Hi Steve,

    The 260 Ohm resistor value mentioned in the datasheet is just an example to demonstrate the input current limit calculation based on ILIM pin. Using this value for the calculation yields the 1.5A input current limit as described.

    The BQ25890H is very similar to the BQ25890. In the BQ25890 datasheet, KILIM is listed with a max value of 390 in Section 9.2.12 and also for the spec listing in Section 8.5. Use 390 as the max value for BQ25890H as well. We will take note of the 385 KILIM value for future datasheet updates.

    Regards,

    James