Datasheet DK1203 (Dongke Semiconductor) - 3

SHENZHEN DONGKE SEMICONDUCTOR CO., LTD SMALL POWER OFF-LINE SWITCH MODE POWER CONTROLLER -DK1203 7. ELECTRICAL CHARACTERISTIC Value Parameter Condition Unit Min. Typ. Max.
Vcc (Work Power Supply) AC input: 85V-265V 4 5 6 V Start threshold Voltage AC input: 85V-265V 4.8 5.0 5.2 V Restart Voltage AC input: 85V-265V 3.6 4.0 4.2 V Protect Voltage of VCC AC input: 85V-265V 6.25 6.55 6.85 V Current of Vcc Vcc=5V, Fb=2.2V 10 20 30 mA Start time AC input: 85V -- -- 500 mS BJT Voc Breakdown voltage Ioc=1mA 700 -- -- V OC Protection Voltage L=1.2mH 460 480 500 V Peak Current Protection Vcc=5V, Fb=1.6V---3.6V 650 720 800 mA Vcc=5V, Fb=1.6V---2.8V 50 65 70 Khz PWM Output frequency Vcc=4.6V, Fb=2.8V---3.6V 0.05 --- 65 Khz Stepped Frequency Vcc=4.6V, Fb=1.6V---2.8V 0.8 1 1.2 Khz Temperature protection Vcc=4.6V, Fb=1.6V---3.6V 120 125 130 ℃ Duty cycle of PWM Vcc=4.6V, Fb=1.6V---3.6V 5 -- 75 % Control voltage Fb AC input: 85V-265V 1.6 3.6 V
8. TYPICAL APPLICATION SAMPLE (12V1A OUTPUT FLYBACK TYPE SWITCH MODE POWER SUPPLY) 8.1 Components list
NO. NAME SPEC. / MODEL NO. POSITION USED QTY REMARK 1 Fuse F2A/AC250V F1 1 2 Diode IN4007 D1~D4 4 3 Diode FR107 D5 1 Address: Building 18, Hejing industrial zone, Heping village, Fuyong, Baoan Area, Shenzhen, China. 3 Tel: 86-755- 29598396 Email: amy@dkpower.cn Website: www.dkpower.cn