LDH-25-500 [MEANWELL]

DC-DC Step-Up Constant Current LED driver;


型号：	LDH-25-500
厂家：	MEAN WELL ENTERPRISES CO., LTD.
描述：	DC-DC Step-Up Constant Current LED driver
文件：	总6页 (文件大小：591K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

DC-DC Step-Up Constant Current LED driver

LDH-25 series

(Pin mounted style)

(Lead wire style)

■ 

■ 

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‧

‧

‧

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‧

‧

‧

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‧

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‧

‧

‧

‧

■ 

current output. LDH-25 operates from

9.5～32VDC and offers models with different rated current ranging between 250mA and 700mA. With

the high efficiency up to 95.5%, 

 allows this series to fit solar LED street light. LDH-25is equipped with

various function options, such as dimming methodologies, so as to provide the optimal design flexibility

for DC source LED lighting system.

■ 



    

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





File Name:LDH-25-SPEC 2020-10-13

DC-DC Step-Up Constant Current LED driver

LDH-25 series

SPECIFICATION

MODEL

LDH-25-250

LDH-25-350

LDH-25-500

LDH-25-700

RATED CURRENT

250mA

350mA

500mA

700mA

CURRENT ACCURACY(Typ.)

VOLTAGE RANGE Note.2

RATED POWER

±5% at 12VDC input and 24 VDC Input

12.5~50VDC

25W

12.5~84VDC

21W

12.5~72VDC

25.2W

12.5~36VDC

25.2W

OUTPUT

CURRENT RIPPLE

5%(@rated current)

VOLTAGE RANGE Note.2

EFFICIENCY (Typ.)

9.5~32VDC

91.5%/12V

INPUT

91.5%/12V

92.5%/12V

94%/24V

92%/12V

95%/24V

94%/24V

95.5%/24V

DC CURRENT (Typ.)

2.5A/12VDC, 1.2A/24VDC

Leave open if not used

1KHz-3KHz 10V PWM signal or 0-10V DC input

DIMMING FUNCTION Note.2

DIMMING

QUIESCENT INPUT CURRENT

IN SHUTDOWN MODE(Typ.)

7mA when PWM dimming OFF @12VDC

SHORT CIRCUIT

PROTECTION OVER VOLTAGE

Output short circuit, the power supply will be damaged

85~120V 73~100V

51~80V

37~60V

NO LOAD

WORKING TEMP.

Output voltage rise to OVP, and drop equal to input voltage, re-power to recovery

-40 ~ +70℃ (Refer to "Derating Curve")

20 ~ 90% RH non-condensing

WORKING HUMIDITY

-40 ~ +85℃, 10 ~ 95% RH

STORAGE TEMP., HUMIDITY

ENVIRONMENT

TEMP. COEFFICIENT

VIBRATION

SAFETY STANDARDS

EMC EMISSION Note.5

±0.03%/℃ (0 ~ 50℃)

10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

IEC 61347-1, IEC 61347-2-13, EAC TP TC 004 approved

Compliance to EN55015;EAC TP TC 020

SAFETY &

EMC

Compliance to EN61547,EN61000-4-2,3,4,6,8; light industry level, criteria A;EAC TP TC 020

EMC IMMUNITY

MTBF

4161K hrs min. Telcordia TR/SR-332(Bellcore);

896.4Khrs min. MIL-HDBK-217F (25℃)

OTHERS

NOTE

DIMENSION

PACKING

52.4*27.2*24mm (L*W*H)

Pin mounted style: 50g, 200pcs/11Kg/0.89CUFT;

Lead wire style: 57g, 200pcs/12.4kg/0.98CUFT

℃ꢀ







℃

℃℃



※   ：  ,    https://www.meanwell.com/serviceDisclaimer.aspx

File Name:LDH-25-SPEC 2020-10-13

DC-DC Step-Up Constant Current LED driver

LDH-25 series

Mechanical Specification

Pin Configuration

Unit: mm

LDH (PIN Style):

52.4

3.5±1mm

3.7

Pin No.

Vin+

Comment

DC Supply

DC Supply,

Vin-

Don’t connect to Vout-

BOTTOM

VIEW

Dim+

Dim-

2 in 1 dimming

LED- connection

LED+ connection

Vout-

Vout+

P/N diameter:1.04

LDH (Lead Wire Style):

52.4

Pin No.

Comment

3.7

Vin+(Red) DC Supply

8mm

100±10mm

DC Supply

Vin-(Black)

Don’t connect to Vout-

Dim+

2 in 1 dimming

(Blue)

BOTTOM

VIEW

Dim-

2 in 1 dimming

(White)

Vout-

LED- connection

LED+ connection

(Black)

Vout+

(Red)

Derating Curve

Static Characteristics

18-32V

100

12-18V

-40

70 100

9.5

Ta (℃)

INPUT VOLTAGE (V)

File Name:LDH-25-SPEC 2020-10-13

DC-DC Step-Up Constant Current LED driver

LDH-25 series

Standard Application

※ 2 in 1 dimming function

‧Output constant current level can be adjusted by applying one of the three methodologies between DIM+ and DIM-:

0 ~ 10VDC, or 10V PWM signal

‧Direct connecting to LEDs is suggested. It is not suitable to be used with additional drivers.

◎ Applying additive 0 ~ 10VDC

100%

90%

80%

70%

60%

50%

40%

30%

20%

10%

Vo+

Vo-

DIM+

Additive Voltage

DIM-

“DO NOT connect "DIM- to Vo-"

0V 1V 2V 3V 4V 5V 6V 7V 8V 9V 10V

Dimming input: Additive voltage

100%

90%

80%

70%

60%

50%

40%

30%

20%

10%

◎ Applying additive 10V PWM signal (frequency range 1KHz ~ 3KHz):

Vo+

Vo-

DIM+

Additive PWM signal

DIM-

“DO NOT connect "DIM- to Vo-"

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

Duty cycle of additive 10V PWM signal dimming input

Note: 1.Min.dimming level is about 8% and the output current is not defined when 0%＜lout＜8%.

2.The output voltage is about equal to input voltage when dimming input is about 0Vdc,or 10V PWM signal with 0% duty cycle.

File Name:LDH-25-SPEC 2020-10-13

DC-DC Step-Up Constant Current LED driver

LDH-25 series

Efficiency VS Load

LDH-25-250 12VDC input Vf=3.05V

LDH-25-250 24VDC input Vf=3.05V

95%

94%

93%

92%

91%

90%

97%

96%

95%

94%

93%

92%

Number of LEDs

LDH-25-350 12VDC input Vf=3.14V

LDH-25-350 24VDC input Vf=3.14V

95%

94%

93%

92%

91%

90%

97%

96%

95%

94%

93%

92%

Number of LEDs

LDH-25-500 12VDC input Vf=3.18V

LDH-25-500 24VDC input Vf=3.18V

95%

94%

93%

92%

91%

90%

97%

96%

95%

94%

93%

92%

Number of LEDs

LDH-25-700 12VDC input Vf=3.29V

LDH-25-700 24VDC input Vf=3.29V

95%

94%

93%

92%

91%

90%

97%

96%

95%

94%

93%

92%

Number of LEDs

Application Notes:

1.The positive and negative input terminals must be connected correctly and negative voltage can not be input

to avoid damage to the power supply.

2.Due to the large input current, please pay attention to the voltage drop of the wiring, to ensure the power

supply to work properly.

3.At dim off,LDH output voltage will drop to the same level as input voltage.To get luminaires complete dark,

please make luminaires are light off when they are driving by the input voltage.

File Name:LDH-25-SPEC 2020-10-13

DC-DC Step-Up Constant Current LED driver

LDH-25 series

Application Notes of EMC

1. IfLDH-25 is powered by a battery, comply with EN55015 without additional Input filter and capacitors.

. LDH-25ispowered by DC Bus, additional EMC filter parts shall be added to meet EN55015. The recommended circuit is shown in Figure1

Figure 1

Figure 1: Parameter description

Electrolytic capacitor 100uF/35V

Common Mode Choke

11.5mH/Ring code(T16×12×8)/wire(0.6mm×1)/50 Turns

(Mn-Zn Ferrite/μi=10000±30%/AL=4600nH/N²)

LF1

File Name:LDH-25-SPEC 2020-10-13

LDH-25-500 [MEANWELL]

相关型号：

LDH-25-500W

LDH-25-700

LDH-25-700W

LDH-45

LDH-45A-1050

LDH-45A-350

LDH-45A-500

LDH-45A-700

LDH-45B-1050

LDH-45B-350

LDH-45B-500

LDH-45B-700