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[FAQ] TPS61088: The variation of current limit point

Part Number: TPS61088


Could you tell me about variation of current limit point?
The data sheet describes the current limit variation information of the specific condition.

However, customers want variation information other than 100kΩ.
Please tell me how to estimate the current value MIN and MAX obtained by the following calculation.

  • Dear Sir,

    For the minimum value, it is: 

    Under PFM mode,
    Ilim=1190000/Rlim=yA typ, minimal Ilim=yA-1.3A;

    Under the PWM mode,
    Ilim=1190000/Rlim -1.6A=yA-1.6A , minimal Ilim=yA-1.6A-1.3A;

    For the maximum value, it is

    Under PFM mode,
    Ilim=1190000/Rlim+1.1A maximum

    Under the PWM mode,
    Ilim=1190000/Rlim -1.6A+1.1A maximum