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SD682X

					
SINGLE STAGE PRIMARY SIDE REGULATION PFC CONTROLLER FOR LED DRIVER

					
				

				

					

												

							
							

								
    The SD682X is a single stage primary side regulation (PSR) power factor correction (PFC) controller, built-in high voltage power MOSFET, specially designed for flyback LED driver. 
    The Device adopts constant on time operation to achieve high power factor. 
    The SD682X provides accurate constant current control and operates in boundary conduction mode (BCM) with high efficiency. The Device adopts primary side regulation eliminating the opto-couple, secondary feedback control and loop compensation for reducing design and cost. 
    Constant TON is adopted for high PF; due to patented close-loop control technology pin COMP and peripheral compensation network are unnecessary, and output current will not be affected by moisture or leakage current; thanks to patented THD technology, low THD is obtained without optimized THD network in most applications. 
    The SD682X provides completed protections such as short LED protection, open LED protection and over temperature protection, etc.

							

						

																		

							
Main feature

							

								
  • PSR flyback topology
  • Boundary Conduction Mode
  • Patented close-loop technology to prevent moisture and leakage, peripheral compensation network is unnecessary
  • Patented THD optimized technology without need of peripheral optimized network
  • Built-in 650V high voltage power MOSFET
  • Leading edge blanking
  • Constant on time controlVC
  • C under voltage lockout
  • Over temperature protection
  • Cycle by cycle current limiting
  • Peak current compensation 
  • Short LED protection and Open LED protection

							

						

																		

							
Ordering Information

							

								

									
										

											Product Name
											Package form
											Marking
											Hazardous Substance Control
											Packing Type
											Remarks
										

									
									
																				

											SD6821S
											SOP-7-225-1.27
											/
											Halogen free
											Tube
											
										

																				

											SD6821STR
											SOP-7-225-1.27
											/
											Halogen free
											Tape & reel
											
										

																				

											SD6822S
											SOP-7-225-1.27
											/
											Halogen free
											Tube
											
										

																				

											SD6822STR
											SOP-7-225-1.27
											/
											Halogen free
											Tape & reel
											
										

																				

											SD6824S
											SOP-7-225-1.27
											/
											Halogen free
											Tube
											
										

																				

											SD6824STR
											SOP-7-225-1.27
											/
											Halogen free
											Tape & reel
											
										

																				

											SD6824D
											DIP-7-300-2.54
											/
											Halogen free
											Tube
											
										

																				

											SD6827D
											DIP-7-300-2.54
											/
											Halogen free
											Tube
											
										

																			
								


							

						

																		

							
Block Diagram

							

								
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