Dear all......

I am planning to do SMPS with Viper 22A chip...P.S o/P requirement is 5V,1A and 3.6 V, 20-300V 50HZ AC input.But i have one doubt regarding the input supply range whether it will work 20-300 AC input range? So anybody can give the useful information about it.

 

heres a link to the data sheet......
http://www.st.com/web/en/resource/technical/document/datasheet/CD00087939.pdf

 

heres the file for all to have a look at

 

Your input voltage range is far too broad; narrow it down considerably. Look at Table 1, and Table 9.