NON-ISOLATED LED LIGHTING DRIVE IC WITH HIGH PFC AND HIGH CONSTANT CURRENT ACCURACY:SD6901S,SD6902S,SD6904S
SD6901S,SD6902S,SD6904S is designed for non-isolated LED driving with floating Buck structure and built-in 600V MOSFET. With this structure, inductor current is sensed and closed-loop is formed with the internal error amplifier for high constant current accuracy and high input/output regulation rate. Also, high PF in full range is available as its own PFC control. Boundary Conduction mode is adopted for decreasing switching loss and improving the conversion efficiency.
SD6901S,SD6902S,SD6904S integrates various protections, such as output open circuit protection, output short circuit protection, cycle-by-cycle current limit protection, over temperature protection and VCC over voltage protection. The start-up current and operating current are low and highlight LED can be driven with high efficiency in full range (85VAC~265VAC).
●Proprietary constant control method (Patent)
●Built-in 600V MOSFET（SD6901S in mos 1A,SD6902S in mos 2A，SD6904S in mos 4A）
●Constant current with high accuracy for LED (<±3%)<>
●PF>0.9 in full voltage range
●LED short circuit protection (Patent)
●LED open circuit protection
●VCC over/under voltage protection
●Over temperature protection
●Over current protection
●All kinds of LED lighting applications
SD6901STR、SD6902STR、SD6904STR Ordering Information
SD6901STR、SD6902STR、SD6904STR Series of LED driver chip pin configuration diagram
SD6901STR、SD6902STR、SD6904STR Series of LED driver chip pin description
The power supply
Transconductance amplifier output, a integral external capacitance to the ground.
Zero crossing detection input
Power tube Drain output
SD6901STR、SD6902STR、SD6904STR Series of LED driver chip Typical System Application