SD6857 Overview
SD6857 is the primary side controlled LED controller with PFC. It adopts PFM technology for providing accurate constant current control with high average efficiency. With SD6857, opto-couple, secondary feedback control, loop pensation circuit can be eliminated for reducing cost.
SD6857 Key Features
- Active power factor correction (APFC)
- PSR CC/CV
- Ultra-low start-up current
- Primary side control
- Leading edge blanking
- Pulse-Frequency Modulation(PFM)
- VCC overvoltage/undervoltage protection
- LED open/short circuit protection
- Internal over temperature protection
- Cycle by cycle current limiting