LDD-300L(2011) 데이터 시트보기 (PDF) - Mean Well Enterprises Co., Ltd.

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LDD-300L
(Rev.:2011)

DC-DC Constant Current LED driver

Mean Well Enterprises Co., Ltd. 

DC-DC Constant Current LED driver

LDD-L series

PWM Dimming Control

H

ON ON ON

PWM

Signal L OFF OFF OFF

100~1KHz

Max

Output

Current

0

During PWM dimming operation, the output current will change to

PWM style.

100

Tol : 3%(Typ.)

75

50

25

Standard Application

+Vin

PWM

H

L

Dimming

LDD-L

-Vin

H: >3.5~8VDC or open circuit

L: <0.5VDC or short

+Vout

1st LED

Last LED

-Vout

0

25

50

75

100

Duty Cycle (%)

Efficiency VS Output Voltage(Number of LEDs)

Fig-1

12VDC input, 1~3 LEDs(Vf=3V)

101000.%0%

9955.%0%

9900.%0%

8855.%0%

8800.%0%

7755.%0%

7700.%0%

1

Fig-3

110000.0%%

2

Output Voltage(LEDs)

36VDC input, 1~10 LEDs(Vf=3V)

9955.0%%

9900.0%%

8855.0%%

8800.0%%

7755.0%%

7700.0%%

6655.0%%

11

22

33

44

55

66

77

Output Voltage(LEDs)

Fig-2

101000.%0%

300 mA

350 mA

500 mA

600 mA

700 mA

9955.%0%

9900.%0%

8855.%0%

8800.%0%

7755.%0%

7700.%0%

3

11

22

300 mA

350 mA

500 mA

600 mA

700 mA

88

99

1100

24VDC input, 1~7 LEDs(Vf=3V)

300mA

350mA

500mA

600mA

700mA

33

44

55

66

77

Output Voltage(LEDs)

File Name:LDD-L-SPEC 2011-06-02

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