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LM5122-Q1: LM5122-Q1 current sense pin leakage current when UVLO is OFF

Intellectual 590 points

Replies: 3

Views: 31

Part Number: LM5122-Q1

Hi

I'm considering this device for an automotive 12V application in VBAT line  I'm concerned about sleep current.

In sleep case  i will turn OFF UVLO pin ( i.e. short to GND in my case ). At this time also whether there will be any leakage current on the current sense pins . .ie. CSN and CSP   According to datasheet some 11uA/12uA figure is mentioned . Please confirm.


Regards
Stephen

  • Hello Stephen,

    This is the bias current during operation. Let me clarify the leakage current during shutdown.

    Best regards,
    Brigitte

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  • In reply to Brigitte:

    Hi Stephen,

    We currently do not have the data on hand regarding CSP/CSN pin leakage current during shutdown. If you need to calculate current draw during sleep, you can use the 11uA/12uA as a worst case approximation.

    Thanks,

    Richard 

  • In reply to Richard Fu22:

    Hi Richard,

    Thank you for the confirmation. 11uA/12uA may be little more for my application. I will check.

    Thanks & Regards,

    Stephen

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