SHENZHEN DONGKE SEMICONDUCTOR CO., LTDHIGH PERFORMANCE SWITCH MODE POWER CONTROLLER-DK1065. CONNECTION DIAGRAMPIN FUNCTIONPin NO.Pin NameFunction Testing pin, suggested to be unloaded.(Prohibited to be connected to 1 Test other circuits) 2 GND Ground reference 3 Fb Feedback control pin 4 Vcc Power supply of the control circuits Output pin. Connected with internal high voltage Collector point and 5,6,7,8 Collector switch mode transformer. 6. BLOCK DIAGRAM7. ABSOLUTE MAXIMUM RATINGSSymbol ParameterValueUnit Vcc Supply voltage -0.3V--9 V Ivcc Current of supply voltage 40 mA 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