LT1461 shutdown pin open

In my circuit, shutdown pin is left open and the output voltage has changed from 2.990V to 3.000V in a hour

When I shutdown pin leave open, is output voltage affected?

Or do I have any other potential problem in my circuit when the output voltage change from 2.990V to 3.000V in a hour?

How can I debug this?

  • +1
    •  Analog Employees 
    on Dec 11, 2018 1:17 AM

    Hi Ogura,

    The LT1461 should operate normally when pin 3 (!SHDN) is left open as noted in the product data sheet. Have you tried connecting the pin to VIN and re-testing ? 

    Can you share the schematic and the test conditions ?

    Regards,

    Rob