DW8520 High Power LED Driver
DONGWOON-DW8520 Order information
ORDERING PART NUMBER
| MARKING
| PACKAGE
| TRANSPORT MEDIA |
DW8520
| DW8520
xxxxxX
| 8SOIC
| 2500/Tape and Reel
|
DW8520 High Power LED Driver General Description:
The DW8520 is ideally suited for buck converter topol-ogy LED driver IC.
It includes an 9V~16V linear regulator which allows it to work from a wide range of input voltages without the need for an external low voltage supply.
The DW8520 includes a PWM dimming input that can
accept an external control signal with a duty ratio of 0-100% and a frequency of up to a few kilohertz.
The DW8520 is available in a thermally enhanced 8 pin SOIC package.
DW8520 High Power LED Driver Features:
●Buck converter topology LED drivers；
●Internal zener regulator ；
●Constant frequency or constant off-time operation；
●Linear and PWM dimming capability；
●Open loop peak current controller;
●High efficiency up to 90%;
●Power down to 1mA maximum ;
●Thermally enhanced 8-lead SOIC package
DW8520 High Power LED Driver Applications:
●AC/DC LED driver applications
●Signage and decorative LED lighting
●General lighting of flat panel displays
●RGB backlight
●General purpose constant current source
●IBulb light
DW8520 High Power LED Driver Pin Information
PIN No.(DW8520)
| DW8520 Pin Name
| I/O | DW8520 Description |
1
| NC
| - | No connection |
| 2 | GND
| - |
Chip ground.. |
3
| CS
| I
| Current sense Pin. The Maximum current is sensed by a resistor and the resulting voltage is applied to this pin
|
| 4 | OUT
| O | This is the output gate driver for external MOSFET
|
| 5 | PWM
| I
| PWM Dimming control Pin, Active high operates the device, If PWM function not used the pin must connect to VREG, When open the pin, The device disable by internal pull down resistor |
| 6 | AD
| I
| This pin sets the analog dimming (0~1.5V)
|
| 7 | RT
| I
| This pin sets the oscillator frequency.
|
| 8 | VREG
| - | This is input supply for all internal circuits
|
DW8520 Block Diagram:
DW8520 Typical Application Circuit:
Key words of this article：DW8520, DONGWOON, Buck LED Regulator , High Voltage LED Driver
