DW8552 Primary-Side Regulator LED Controller for With PFC and High Voltage MOSFET for LED Driver IC
DONGWOON-DW8552 ordering information
Product model
| Marking ID
| Package Type
| Packing Type Supplied As
|
DW8552
| DW8552 | DIP8
| 2500 Units on Tape & Reel
|
DONGWOON-DW8552 General Description:
DW8552 is a primary-side control offline flyback controller with active power factor correction. It is especially designed for LED lighting system.
The DW8552 controls the LED current accurately without using an opto-coupler, which can significantly simplify the design of LED lighting system. Utilizing an on-chip multiplier, the DW8552 achieves high power factor over wide line and load ranges.
The multi-protection function largely enhances the safety and reliability of the system, including over voltage protection; short circuit protection, LED open protection, cycle-by-cycle current limit, VCC UVLO and over-temperature protection.
DONGWOON-DW8552 Features:
●Real current control without secondary feedback circuit；
●Built-in 650V power MOSFET；
●High current accuracy of line regulation；
●Active power factor correction(PF>0.9)
●Low harmonic content
●High efficiency over wide operating range
●Cycle by cycle current limit
●Input over-voltage protection
●LED short protection
●LED open protection
●Over-temperature protection
●Available in DIP8 package
DONGWOON-DW8552 Applications:
●Isolated type LED driver applications
●Bulb light
●General lighting of flat panel displays
●RGB backlight
●General purpose constant current source
●In/Outdoor Lighting, Street, Roadway, Parking, Construction Lamp
DONGWOON-DW8552 Pin Information
Pin Number(DW8552)
| DW8552 Pin Name | DW8552 PIN Description |
1
| SNP
| Primary current sense Pin. The pin is used for cycle by cycle peak current control and limit. |
| 2 | VCC
| Power Supply Pin. This pin supplies current to the internal start-up circuit. This pin must be bypassed with a capacitor nearby. |
| 3 | GND
| Power Ground |
| 4 | FB
| Voltage Loop Feedback Pin. FB is used to detect open LED conditions bysampling the third winding voltage. |
| 5 | REC
| Rectified Voltage Sense Pin. The pin is used for sensing the AC line voltage to perform power factor correction. |
6
| COMP
| Compensation Pin for Internal Error Amplifier. Connect a capacitor between the pin and GND to compensate the internal feedback loop. |
| 7 | DRAIN
| The drain of the internal power MOSFET.
|
| 8 | DRAIN
| The drain of the internal power MOSFET. |
DONGWOON-DW8552 Block Diagram
DONGWOON-DW8552 ical Application Circuit
Key words: high PF built-in MOS isolation IC, high PF isolation chip, power driven IC isolation driver chip, DW8552, DONGWOON original IC
