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 Function1 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 UnitVcc 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:
[email protected] Website: www.dkpower.cn
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