SHENZHEN DONGKE SEMICONDUCTOR CO., LTDHIGH PERFORMANCE SWITCH MODE POWER CONTROLLER-DK1069.2 Normal Working Sequence Diagram9.3 Control Pin---Fb Is & Fb sequence diagram Fb & working frequency (PWM) sequence diagram 9.4 Self-Power Supply Circuit (National patent owned) There is self-power supply circuit inside the IC, which can control the power voltage about 5V for the electricity consumption of the IC itself. It can only afford the electricity consumption of itself only but can not afford for the external circuit. 9.5 Leading Edge Blanking (LEB) Ib & Is sequence diagram Address: Building 18, Hejing industrial zone, Heping village, Fuyong, Baoan Area, Shenzhen, China. Tel: 86-20-38488121 Email: amy_hsf@yahoo.cn Website: www.yxpower.com