UCC256304: TENTATIVE no use ACin

Part Number:UCC256304

Hi all,

Many customer in Japan use FA6A31N.

Bottom below

americas.fujielectric.com/.../acdc-power-supply-control-ic

This IC can be used without no AC input and HV terminal (VH) connect to GND.

Can UCC256301 and UCC256304 be used only Vcc input, HV to GND?

Vcc is provided from  aux. Flyback primary low voltage.

This is not final use. Only just IC swapping evaluation.