DIMMING OPERATION
Output constant current level can be adjusted by applying one of the three methodologies between DIM+ and DIM-:
0 ~ 10VDC, or 10V PWM signal or resistance.
Direct connecting to LEDs is suggested. It is not suitable to be used with additional drivers.
Dimming source current from power supply: 100 A (typ.) μ
LDC-80 series
◎ Applying additive 0 ~ 10VDC
◎ Applying additive 10V PWM signal (frequency range 100Hz ~ 3KHz):
Vo+
Vo-
DIM+
DIM-
+
+
+
-
-
-
“DO NOT connect "DIM- to Vo-"
Additive Voltage
Vo+
Vo-
DIM+
DIM-
+
+
-
-
“DO NOT connect "DIM- to Vo-"
Additive PWM signal
0V 1V 2V 3V 4V 5V 6V 7V 8V 9V 10V
10%
0%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Output current (%)
0%
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
10%
0%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Output current (%)
Dimming input: Additive voltage
Duty cycle of additive 10V PWM signal dimming input
80W Constant Power MODE Linear LED Driver
AC/L
AC/N
Vo-
Vo-
Vo+
Vo+
NTC
DIM+
FG
◎ Applying additive resistance:
Vo+
Vo-
DIM+
DIM-
+
+
-
-
“DO NOT connect "DIM- to Vo-"
Additive Resistance
10%
0%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Output current (%)
Short
10K/N 20K/N 30K/N 40K/N 50K/N 60K/N 70K/N 80K/N 90K/N 100K/N
(N=driver quantity for synchronized )dimming operation
Dimming input: Additive resistance
File Name:LDC-80-SPEC 2018-05-10
NTC
IADJ
IADJ
DIM-
※ 3 in 1 dimming function(for B-Type)
DA+;Ls
DA-;N
Note : 1. Min. dimming level is about 8% and the output current is not defined when 0%< out<8%.I
2. The output current could drop down to 0% when dimming input is about 0Vdc or 10V PWM signal with 0% duty cycle.
3. To ensure the dimming performance at low dimming level,output current must be over 80mA.
