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?
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 ?