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BQ25616: Can we use 1kΩ resistor for RILIM when we want to set 500mA for IINDPM?

K.Yaita
Guru 29690 points
Part Number: BQ25616

Hi Team,

The datasheet shows the following in page 19.
---------------------------------------
Input current limit must be programmed to a value within a range of 500 mA to 3200 mA with a pull-down resistor on the ILIM pin. The input current limit is set as:
IIINDPM = KILIM/RILIM
---------------------------------------
The datasheet also shows KILIM is 478(A x Ω) typical.

Can we use 1kΩ resistor for RILIM when we want to set 500mA for IINDPM?
I would like to ask above because IINDPM is 478mA in this case.

Best Regards,
Yaita

  • 0
    TI__Expert 5590 points

    Yaita:

    Yes, 478mA is good for 500mA IINDPM. Please keep in mind that IINDPM is effective only when D+/D- detects unknown adaptor. Otherwise, IINDPM is set based on USB detection. If D+/D- pins are floating, adaptor will be detected as unknown.

    Regards,

    Hong