DK 1203 low power off-line switching power supply control chip

Key Features
Input voltage 85V to 265V full voltage range
Built-in 700V power tube
? Built-in self-powered circuit (patent), no auxiliary winding power supply
? Integrated self-starting circuit
? Current mode PWM control
? VCC operating voltage range 4V to 6V
? 65Khz switching frequency
? Light load automatically enter the jump cycle mode
? Over temperature, overcurrent, overvoltage, overload protection
? Standby power consumption less than 0.3W
? Frequency jitter reduces EMI filtering costs
Application areas
? AC / DC power adapter
? DVD / VCD power supply
? Air conditioning power supply
? Induction cooker power supply
? LED power supply
? Set-top box power supply
Power range
Input voltage (ac) 85 ~ 265V 85 ~ 145V 180 ~ 265V
Maximum output power 12W 12W 18W







Products are widely used in electronic and electrical communications equipment, and other fields

Customers at home and abroad well-known manufacturers