Hi,
We're experiencing issues with the LM2611 when running at low output loads (~10mA) where after a period of minutes or hours, the IC suddenly draws large amounts of current and unless protected by the current limit of a supply is destroyed. The IC is being used in the following configuration from the datasheet. Due to the low output load, the IC is constantly running in pulse skipping mode, but provides a reasonable output until the failure occurs.
I wonder if Cff of 330pF is suitable for very low load conditions, but there is not a great deal of detail on choosing Cff in the datasheet. Any ideas are appreciated.
Best regards,
James.