Product Name: 1A/1.5A/2A/2.5A/3A/4A High-Power Constant-Current Step-Down LED Driver Board DC 4-27V for Automotive RCL DRL Fog Lights LD2740SC
Packing list:
1PCS DC 4-27V 1A/1.5A/2A/2.5A/3A/4A Step-down constant-current LED Driver Board
Description :
1A/1.5A/2A/2.5A/3A/4A
Switch-Mode Step-down Constant-Current High-Brightness LED Driver Module
4-27V switch-mode step-down constant-current high-brightness LED (HB LED) driver Module
Working voltage :
DC 4-27V(1A/1.5A);DC 5-27V(2A/2.5A);DC 6-27V(3A/4A)
Output Current: 0-1A/1.5A/2A/2.5A/3A/4A;By changing the R4 resistance, the maximum drive current can be changed
Maximum output power: 80W(20V*4A)
Current regulation: Through PWM control
Single pin ON/OFF and brightness control using PWM
Wide input voltage range: 4V to 27V
Up to 1A/1.5A/2A/2.5A/3A/4A output current
3.3V/5V PWM Adjustable Constant LED Current
5% output current accuracy.
Up to 1MHz Switching Frequency
Inherent open-circuit LED protection
High efficiency (up to 92%)
Adjustable Constant LED Current
High-Side Current Sense
Hysteretic Control: No Compensation
Size : 42*22*16mm(With/No Terminal)
Weight : 13g(With Terminal);10g(No Terminal)
Typical Application :
Architectural, Industrial, and Ambient Lighting
Automotive RCL, DRL, and Fog Lights
MR16 and Other LED Bulbs
Indicators and Emergency Lighting
Illuminated signs
Car LED lights
Stage lights
Pin Description
VIN : Power Supply+
GND : Power Supply-
LED+: LED Out+
LED- : LED Out-
PWM : Logic level dimming input+
GND : Logic level dimming input-
Limit maximum output current
(Iout=0.16/R4)
Wiring Diagram 1 : 1A/1.5A/2A/2.5A/3A/4A LED Constant Current Drive Circuit
Wiring Diagram 2 : 1A/1.5A/2A/2.5A/3A/4A LED Constant Current Drive Circuit(with switch)
Wiring Diagram 3 : 0-1A/1.5A/2A/2.5A/3A/4A LED PWM Dimming Circuit