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Original question:

LM5069: how to set PWR pin resistance, Timer pin capacitance, Sense pin Connection and etc.

LM5069: Load Switch

Patrick Kaschek
Prodigy 10 points
Part Number: LM5069

Hello,

we also want to use the LM5069 as load switch.

Is it really recommended to leave the Timer & PWR pins open?

What happens with the current limit function and the timer function if they are connected to a resistor / capacitor anyway?

Best Regards,

Patrick

  • 0
    TI__Guru** 105211 points

    Hi Patrick,

    To configure LM5069 as a simple ON/OFF load switch without overcurrent protection, you need to short VIN and SENSE pins to disable the overcurrent protection features. In that case, Timer & PWR functions will not be active as you are setting to ideally infinite OCP level with  Rsns = 0 Ohm.

    Best Regards, Rakesh 

  • 0 in reply to Rakesh
    Prodigy 10 points

    Hi Rakesh,

    thanks for the reply.

    I understnad that the RSns = 0R with a short from VIN to Sense.

    But my question go to the resistor Rpwr and the capacitor Ctimer.

    Is it ok to use e.g a 100kR resistor and a 100nF capacitor?

    Best Regards,

    Patrick

  • 0 in reply to Patrick Kaschek
    TI__Guru** 105211 points

    Yes. You can use any value for Rpwr and capacitor Ctimer