AC-DC buck topology

AC-DC Power Converters
1

Hello,

We are looking for AC-DC offline switcher IC based on Buck Topology, please suggest some IC which support below requirement.
Vin : 90V to 265VAC (universal Line voltage)
Vout : 5V(fixed or adjustable)
Iout : 600mA (minimum)
Efficiency : >80% or near by

Thanks and regards,
Shashikant Prajapati
H/W design engineer

2

So no line isolation? MP175 or 175l at a guess