Lowest Power Standby Buck Converter with LNK574?

Hi,

I need to design a non isolated buck converter with the following spec's:

Input AC 85-265 Volt
Output DC 24 Volt / 22mA

Standbypower should be as small as possible. I thought the LNK574 could be the right one? Would you agree?

I found no Application Example. Can I adapt an existing design?

Is it possible to convert two different Voltages (3.3V / 25mA regulated and 24V / 17mA unregulated) ?

Best regards,
Tobias