High PF Offline Single Stage LED Driver with High Voltage Startup

   The NCL30060 is a switch mode power supply controller intended for low to medium power single stage power factor (PF) corrected LED Drivers. It employs a constant on−time control method to ensure near unity power factor across a wide range of input voltages and output power. It can be used for isolated flyback as well as buck topologies. The device offers a suite of robust protection features to ensure safe operation under a range of fault conditions.

FEATUREs
• Built−In High Voltage Start−up Circuit
• Direct Opto−coupler Feedback Connection
• Constant On−Time PWM Control
• Quasi−Resonant Switching
• Low Operating Current (1.6 mA typical)
• Source 250 mA / Sink 400 mA Totem Pole Gate Driver
• Integrated 12 V (typ) Gate Drive Clamp
• Frequency Dithering for Reduced EMI Profile
• Enable/Disable Function
• Dynamic Self−Supply (DSS) Operation
• Operating TJ from −40°C to 105°C
• Maximum On Time Protection
• Integrated Brown−out
• Overvoltage Protection
• Cycle−by−Cycle Overcurrent Protection
• Output Winding Short−Circuit Protection
• Thermal Shutdown
• These Devices are Pb−Free and Halogen Free/BFR Free

Typical Applications
• LED Lighting