NON-ISOLATED LED LIGHTING DRIVE IC WITH HIGH PFC AND HIGH CONSTANT CURRENT ACCURACY:SD6901S,SD6902S,SD6904S
Product Description(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).
Features(SD6901S,SD6902S,SD6904S)：
●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
●Boundary-Conduction mode
●LED short circuit protection (Patent)
●LED open circuit protection
●VCC over/under voltage protection
●Over temperature protection
●Over current protection
SD6901STR、SD6902STR、SD6904STR Application
●Bulb Lamp
●Fluorescent lamp
●All kinds of LED lighting applications
SD6901STR、SD6902STR、SD6904STR Ordering Information
Part No.
| Package
| Marking
| Material
| packaging |
| SD6901STR | SOP-7-225-1.27
| SD6901S
| Halogen free
| Tape&Reel
|
| SD6902STR | SOP-7-225-1.27
| SD6902S
| Halogen free
| Tape&Reel
|
| SD6904STR | SOP-7-225-1.27
| SD6904S
| Halogen free
| Tape&Reel
|
SD6901STR、SD6902STR、SD6904STR Series of LED driver chip pin configuration diagram
SD6901STR、SD6902STR、SD6904STR Series of LED driver chip pin description
Pin number
| Pin Names
| I/O
| Functional description
|
1
| VCC
| POWER
| The power supply
|
| 2 | CS
| I/O
| Sampling current
|
| 3 | COMP
| O
| Transconductance amplifier output, a integral external capacitance to the ground.
|
| 4 | ZCD
| I
| Zero crossing detection input
|
| 5,6 | DRAIN
| O
| Power tube Drain output
|
| 7 | GND
| GND
| Ground
|
SD6901STR、SD6902STR、SD6904STR Series of LED driver chip Typical System Application
SD6901STR、SD6902STR、SD6904STR Function Block
