Datasheet DK1203 (Dongke Semiconductor) - 2

SHENZHEN DONGKE SEMICONDUCTOR CO., LTD SMALL POWER OFF-LINE SWITCH MODE POWER CONTROLLER -DK1203 5. CONNECTION DIAGRAM (DIP-8) PIN FUNCTION Pin NO. Pin Name Function
1 OB Startup pin. Internal startup circuit to contact with OC pin. 2 VCC Power supply of control circuits, contacted with an external grounded capacitor of 10uF~100uF 3 GND Ground reference 4 NC Empty pin without internal connection. 5 FB Feedback control pin ， connected with 1nF ～ 10nF grounded capacitor, coupler grounded to control output. 6 NC Empty pin without internal connection. 7,8 OC Output pin. Connected with internal high voltage Collector point and switch mode transformer.
6. ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit
Vcc Supply voltage -0.3V--8 V Ivcc Current of supply voltage 100 mA Vpin Pin voltage -0.3--Vcc+0.3 V Vcol Collector to GND voltage -0.3--730 V Ip Peak current 0.8 A Pd Dissipation power 1000 mW Tc Case operating temperature -20--+125 ℃ Tstg Storage temperature -55--+150 ℃ Tsol Soldering temperature +280 ℃/5S Address: Building 18, Hejing industrial zone, Heping village, Fuyong, Baoan Area, Shenzhen, China. 2 Tel: 86-755- 29598396 Email: amy@dkpower.cn Website: www.dkpower.cn