I am using the LM5006, and I need to add a delay of ~10 seconds from when input voltage is applied until the regulator generates an output (5V in my case).
Timing accuracy is not very important. +/- 50% should be acceptable.
Normally I would use an RC on the regulator enable pin, but it doesn't appear to be that simple for this part - the RT/SD pin performs two functions, and I wouldn't want to effect the switching frequency. Also, the shutdown is active low, which makes it tricky to control with a voltage that is ramping UP.
Perhaps the correct pin to use is actually UV, rather than SD? My relatively long delay would require a pretty big capacitor if I am stuck using the ~200K resistor connected to the UV pin - not so great.
I am trying to keep the circuit as simple as possible. A correctly placed RC would be best. If needed, a discrete transistor or two could be OK. I would like to avoid any reset or timer ICs, if possible.