Datasheet

50%
55%
60%
65%
70%
75%
80%
85%
90%
95%
1 2 3 4 5 6 7 8 9 10 11
12 V
24 V
28 V
50%
55%
60%
65%
70%
75%
80%
85%
90%
95%
1 2 3 4 5 6 7 8 9 10 11
12 V
24 V
30 V
50%
55%
60%
65%
70%
75%
80%
85%
90%
95%
1 2 3 4 5 6 7 8 9 10 11 12 13
12 V
24 V
36 V
50%
55%
60%
65%
70%
75%
80%
85%
90%
95%
1 2 3 4 5 6 7 8 9 10 11 12 13
12 V
24 V
36 V
Efficiency VS Output Voltage(Number of LEDs)
Fig-1 LDB-300L
Fig-3 LDB-500L
Fig-2 LDB-350L
Fig-4 LDB-600L
Output Voltage(LEDs)
Output Voltage(LEDs)
1
1 12 23 34 45 56 67 78 89 910 1011 11
12 23 34 45 56 67 78 89 910 1011 1112 1213 13
12V
12V 12V
12V
24V
24V 24V
24V
36V
30V 28V
36V
Output Voltage(LEDs)
Output Voltage(LEDs)
Standard Application
+Vin +Vout
-Vin
H: >2~10VDC or open circuit
Power OFF : Duty cycle 0 ~ 15%
Power ON : Duty cycle 16 ~ 100%
L: <0.5VDC or short
-Vout
1st LED
Last LED
H
PWM
Dimming
LDB-L
L
0 16 20 30 40 50 60 70 80 90 100
Duty Cycle (%)
5
20
35
50
60
75
90
95
100
◎ During PWM dimming operation, the output current will change to
PWM style.
Non-Linear, Tol : 4%(Typ.)±
PWM Dimming Control
PWM
Signal
Output
Current
H(5V)
Max
L(0V)
0
OFF OFF OFF
ON ON
100~1KHz
ON
50%
50% 50%
50%
55%
55% 55%
55%
60%
60% 60%
60%
65%
65% 65%
65%
70%
70% 70%
70%
75%
75% 75%
75%
80%
80% 80%
80%
85%
85% 85%
85%
90%
90% 90%
90%
95%
95% 95%
95%
DC-DC Constant Current Buck-Boost LED driver
LDB-L
seri e s
Fi le Name:LDB-L-SPEC 2014-10-09