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  • TI Thinks Resolved

LM94022: about supply current

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Replies: 4

Views: 66

Part Number: LM94022

Hello E2E,

When observed the supply current for LM94022, the supply current is to be rise to near 100mA peak, that width is about 40usec. Also, that peak current occure 2Hz.
Does TI know the cause? Please give me advice.

Best regards,
ACGUY

  • ACGUY,

    Is my understanding that there seems to be a spike in supply current when device turns on? Does the supply current settle back to µA range after the 40µSecs? Can you provide scope captures of the current on device power on? Along with the supply voltage?

    Can you provide a schematic with how LM94022 device is connected please?

    Jalen

  • In reply to Jalen Tate89:

    Hello Jalen,

     

    Thank you for reply.

    1:Is my understanding that there seems to be a spike in supply current when device turns on?  

    >> Yes.

    2:Does the supply current settle back to µA range after the 40µSecs?  

    >> Yes.

    3:Can you provide scope captures of the current on device power on? Along with the supply voltage?

    >> I will upload it when ready.

     

    Regards,

    ACGUY

  • In reply to ACGUY:

    ACGUY,

    I will await your data to help understand the problem.

    Thanks,

    Jalen

  • In reply to Jalen Tate89:

    Closing this thread due to inactivity 

    BR-

    Josh

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