LDD-H-SPEC datasheet(4/6 Pages) MEANWELL

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65%

70%

75%

80%

85%

90%

95%

100%

3456

789

300mA

350mA

500mA

600mA

700mA

1000mA

1200mA

1500mA

70%

75%

80%

85%

90%

95%

100%

12345

789

300mA

350mA

500mA

600mA

700mA

1000mA

1200mA

1500mA

75%

80%

85%

90%

95%

100%

12345

300mA

350mA

500mA

600mA

700mA

1000mA

1200mA

1500mA

80%

85%

90%

95%

100%

300 mA

350 mA

500 mA

600 mA

700 mA

1000 mA

1200mA

1500mA

DC-DC Constant Current Step-Down LED driver

LDD-H series

Efficiency VS Output Voltage(Number of LEDs)

Fig-1

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

Fig-2

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

Fig-3

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

Output Voltage(LEDs)

80%

85%

90%

95%

100%

80%

75%

80%

85%

90%

95%

100%

75%

70%

65%

75%

300mA

350mA

500mA

600mA

700mA

1000mA

1200mA

1500mA

300mA

350mA

500mA

600mA

700mA

1000mA

1200mA

1500mA

1000mA

1200mA

1500mA

300mA

350mA

500mA

600mA

700mA

1000mA

1200mA

1500mA

Fig-4

48VDC input, 1~14 LEDs(Vf=3V)

Output Voltage(LEDs)

85%

90%

95%

100%

80%

85%

90%

95%

100%

Standard Application

+Vin

+Vout

-Vin

H: >2.5~6VDC or open circuit

L: <0.8VDC or short

-Vout

1st LED

Last LED

PWM

Dimming

LDD-H

255075100

Duty Cycle (%)

100

◎ During PWM dimming operation, the output current will change to

PWM style.

Tol : 3%(Typ.)

Derating Curve

Ta (

)

℃

-40

100

for 600~1200mA

℃

for 1500mA

℃

for

℃

300~500mA

Peak. Temp 240

℃

10 sec. Max.

60 sec. Max.

(>220

)

℃

220

℃

Time(sec.)

Remark : The curve applies only to the " Hot Air Reflow Soldering"

100

150

220

240

Reflow Soldering Curve (for LDD-300~1000HS)

PWM Dimming Control

PWM

Signal

Output

Current

H(5V)

Max

L(0V)

OFF

100~1KHz

File Name:LDD-H-SPEC

2022-05-24

Output Voltage(LEDs)

LDD-H-SPEC Datasheet(PDF) 4 Page - Mean Well Enterprises Co., Ltd.

LDD-H-SPEC Datasheet(HTML) 4 Page - Mean Well Enterprises Co., Ltd.

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