onsemi NCL30486B2DR2G

The NCL30486B is a power factor corrected flyback controller targeting isolated constant current LED drivers. The controller operates in a quasi−resonant mode to provide high efficiency. Thanks to a novel control method, the device is able to tightly regulate a constant LED current from the primary side. This removes the need for secondary side feedback circuitry, its biasing and for an optocoupler. The device is highly integrated with a minimum number of external components. A robust suite of safety protection is built in to simplify the design. This device is specifically intended for very compact space efficient designs and supports analog and digital dimming with two dedicated dimming inputs control ideal for Smart LED Lighting applications.

• High Voltage Startup
• Quasi−resonant Peak Current−mode Control Operation
• Primary Side Feedback
• CC / CV Accurate Control Vin up to 320 V rms
• Tight LED Constant Current Regulation of ±2% Typical
• Digital Power Factor Correction
• Analog and Digital Dimming
• Dimming Standby Mode (Dim CV Mode)
• Standby Mode Cycle by Cycle Peak Current Limit
• Wide Operating VCC Range
• -40 to +125℃
• Robust Protection Features
  • Brown−Out
  • OVP on VCC
  • Constant Voltage / LED Open Circuit Protection
  • Winding Short Circuit Protection
  • Secondary Diode Short Protection
  • Output Short Circuit Protection
  • Thermal Shutdown
  • Line over Voltage Protection
• This is a Pb−Free Device

• Integral LED Bulbs
• LED Power Driver Supplies
• LED Light Engines