We wish to use this device in a product where we need to switch at 625 kHz. The datasheet only states a "programmable frequency range" of 50 to 600 kHz, while the sync frequency can be +/- 10% of the programmed frequency.
AN-1454 states: "The maximum programmable frequency using the RT pin is 600 kHz. However, using the SYNC pin, the frequency can be increased to 1 MHz.". However, further on, there is a note: "The synchronization frequency present on the SYNC pin needs to be within ±10% of the frequency set using the RT pin".
Is it within spec to program the ADP1074 to run at 600 kHz, then sync it up to 625 kHz?
Yes, you can set Rt to 600kHz then apply a 625kHz to the sync pin.