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TPS2557-Q1: Resistor value on ILIM pin

Adithya Anil
Prodigy 150 points
Part Number: TPS2557-Q1

Tool/software:

Hi,

What is the resistor value that I have to use on ILIM pin of this power switch for passing VBUS at 500mA (default USB 2.0 current), 900mA (default USB 3.0 current), 1.5A (if I configure CC pins) and 3A (if I configure CC pins)?

Thanks and Regards,
Adithya Anil

  • 0
    TI__Mastermind 46541 points

    Hello Adithya,

    Please see Section 9.2.2.2 in the datasheet. This sections shows how to determine resistor values to program the current limit, and the recommended resistor range is 20 kΩ ≤ R(ILIM) ≤ 187 kΩ. Using a 36kΩ resistor will set the current limit to ~3.1A, which allow 500mA, 900mA, 1.5A, and 3A output current.

    Thank you and best regards,

    Seong