You can use either LYTSwitch-4 of LinkSwitch-PL families for this application.

Make use also of the design selector guide given below for design examples

http://www.powerint.com/en/applications/led-driver-ics

Hi

I went through the led design selector i didn't find the one i am looking for. my requirements are :

efficiency >85%, non-dimmable, isolated, P.F>0.9,for bulb B22.

Please provide the same.

hemant kumar

HI Hemant The design selector is used to give you sample designs. This does'nt mean that the exact  particular design youre looking for will be there. If youre exact design is not there, you just choose the closest and adjust your design accordingly.You can use the PIExpert Software to adjust your design or start from a brand new design 

 http://www.powerint.com/en/design-support/pi-expert-design-software

regards