DK3113 chip equivalent, power supply control chip.
l Input voltage 85V to 265V full voltage range l Built-in 700V power tube lBuilt -in self-powered circuit (patent), no auxiliary winding power supply required l Integrate.
1
OB is the power-on start pin. There is a start-up circuit inside that is connected to the high-voltage OC pin. This pin is left floating.
2
VCC power supply pin, externally connect a 10UF~100UF energy storage capacitor to ground.
3
GND Ground.
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