LCM-25KN

LED Driver, 25.2 W, 50 VDC, 500 mA, Constant Current, 180 VAC

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
Manufacturer: MEAN WELL
Product type: AC / DC LED Power Supplies
SVHC: No SVHC (25-Jun-2025)
Product Range: LCM-25KN
Output Current: 500mA
LED Driver Mode: Constant Current
Output Power Max: 25.2W
Input Voltage Max: 277VAC
Input Voltage Min: 180VAC
Output Voltage Max: 50VDC
Power Supply Applications: -
Delivery and price
Units per pack	50
Price	30.97 €
Current stock	10+
Lead time	30 days
Datasheet
**LCM - 25KN   series** 

25W Multiple-Stage Constant Current Mode LED Driver 

> **    ** ~~BG~~ AVVV ~~E~~ WKNX & HCBCE@ ■ **** 

## ■ **** 

 

- ‧ 

 

   - ‧ 

- ‧ 

   - ‧ 

- ‧ 

   - ‧ 

- ‧ 

- ‧ 

- ‧ 

- ‧ 

- ‧ 

 

- ‧ 

## ■ **** 

  ～  ℃℃    

## ■ **** 

## **** 

   

_File Name:LCM-25KN-SPEC   2019-11-19_ 

## 25W Multiple-Stage Constant Current Mode LED Driver 

## **LCM - 25KN series** 

## **SPECIFICATION** 

**MODEL** 

|**MODEL**<br>**LCM-25KN**<br>**DC VOLTAGE RANGE**<br>**RATED POWER**<br>**OUTPUT**<br>**SETUP TIME**<br>**Note.3**<br>**VOLTAGE RANGE**<br>**Note.2**<br>**FREQUENCY RANGE**<br>**POWER FACTOR (Typ.)**<br>**EFFICIENCY (Typ.)**<br>**Note.4**<br>**AC CURRENT (Typ.)**<br>**INPUT**<br>**INRUSH CURRENT (Typ.)**<br>**LEAKAGE CURRENT**<br>**SAFETY STANDARDS**<br>**WORKING HUMIDITY**<br>**STORAGE TEMP., HUMIDITY**<br>**TEMP. COEFFICIENT**<br>**VIBRATION**<br>**MTBF**<br>**DIMENSION**<br>**OTHERS**<br>**NOTE**<br>**PACKING**<br>18.9W<br>59V<br>41V<br>500ms / 230VAC<br>180 ~ 277VAC          220 ~ 392VDC<br>47 ~ 63Hz<br>85%<br>20 ~ 90% RH non-condensing<br>-40 ~ +80<br>, 10 ~ 95% RH<br>℃<br>10 ~ 500Hz, 2G 10min./1cycle, period for  60min. each along X, Y, Z axes<br>℃<br>℃<br>℃<br>**OPEN CIRCUIT VOLTAGE (max.)**<br>**ENVIRONMENT**<br>**SAFETY &**<br>**FUNCTION**<br>**EMC**<br>**PROTECTION**<br>**WITHSTAND VOLTAGE**<br>**ISOLATION RESISTANCE**<br>I/P-O/P:>100M Ohms / 500VDC / 25<br>/ 70% RH<br>℃<br>**CURRENT LEVEL**<br>350mA<br>600mA<br>500mA<br>700mA(default)<br>900mA<br>1050mA<br>**CURRENT TOLERANCE**<br>**SHORT CIRCUIT**<br>**OVER TEMPERATURE**<br>**SYNCHRONIZATION**<br>Constant current limiting, recovers automatically after fault condition is removed<br>Please refer to "SYNCHRONIZATION OPERATION” section<br>**DIMMING**<br>Please refer to "DIMMING OPERATION" section<br>**TOTAL HARMONIC DISTORTION**<br><0.5mA / 240VAC<br>PF<br>0.94/230VAC, PF<br>0.91/277VAC<br>≧<br>≧<br>@full load<br>(Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)<br>COLD START 20A(t<br>=260 s measured at 50% I<br>) at 230VAC<br>width<br>peak<br>μ<br>;Per NEMA 410<br>±5%<br>±0.03%/<br>(0 ~ 50<br>)<br>℃<br>℃<br>**MAX. No. of PSUs on 16A**<br>**CIRCUIT BREAKER**<br>26 units (circuit breaker of type B) / 44 units  (circuit breaker of type C) at 230VAC<br>(Please refer to "STATIC CHARACTERISTIC" section)<br>**WORKING TEMP.**<br>**MAX. CASE TEMP.**<br>Tcase=+85℃<br>Tcase=-30 ~ +85<br>(Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)<br>℃<br>**CURRENT RIPPLE**<br>5.0% max. @rated current<br>Current level selectable via DIP switch, please refer to”DIP SWITCH TABLE” section<br>THD< 20%(<br>)<br>@load 50%/230VAC; @load 75%/277VAC<br>≧<br>≧<br>(Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)<br>Compliance to EN55015, EN61000-3-2 Class C(@load<br>50%) ; EN61000-3-3;<br>≧<br>GB17625.1,GB17743, EAC TP TC 020<br>**EMC IMMUNITY**<br><0.5W<br>**STANDBY POWER**<br>**CONSUMPTION**<br>**Note.5**<br>**EMC EMISSION**<br>**Note.6**<br>Compliance to EN61000-4-2,3,4,5,6,8,11, EN61547, light industry level surge immunity Line-Line 2KV , EAC TP TC 020<br>(<br>)<br>6 ~ 50V<br>6 ~ 54V<br>6 ~ 42V<br>6 ~ 36V<br>6 ~ 24V<br>6 ~ 28V<br>25.2W<br>0.17A/230VAC          0.15A/277VAC<br>Shut down o/p voltage, recovers automatically after temperature goes down<br>I/P-O/P:3.75KVAC ; O/P-KN<br>:500VDC<br>±<br>213.3K hrs min.      MIL-HDBK-217F (25<br>)<br>℃<br>105*68*23mm (L*W*H)<br>0.173Kg ; 72pcs/13.5Kg/1.04CUFT<br>CSA C22.2 No.250.13-12,<br>GB19510.14,GB19510.1,<br>ENEC EN61347-1, EN61347-2-13, EN62384  independent,<br>EAC TP TC 004 approved<br>**KNX STANDARDS**<br>certification<br>1. All parametersNOT specially mentioned are measured at230VAC input, rated current and 25 _ofambienttemperature.<br>2. De-rating may be needed under low input voltages. Please refer to “STATIC CHARACTERISTIC” sections for details.<br>3. Length of set up time is measured at first cold start. Turning ON/OFF the driver may lead to increase of the set up time.<br>4. Efficiency is measured at 500mA/50V output set by DIP switch.<br>5. Standby power consumption is measured at 230VAC.<br>6. The driver is considered as a component that will be operated in combination with final equipment. Since EMC performance will be affected by the<br>complete installation, the final equipment manufacturers must re-qualify EMC Directive on the complete installation again.<br>7. The ambient temperature derating of 3.5<br>/1000m with fanless models and of<br>5<br>/1000m with fan models for operating altitude higher than 2000m(6500ft).|**MODEL**<br>**LCM-25KN**<br>**DC VOLTAGE RANGE**<br>**RATED POWER**<br>**OUTPUT**<br>**SETUP TIME**<br>**Note.3**<br>**VOLTAGE RANGE**<br>**Note.2**<br>**FREQUENCY RANGE**<br>**POWER FACTOR (Typ.)**<br>**EFFICIENCY (Typ.)**<br>**Note.4**<br>**AC CURRENT (Typ.)**<br>**INPUT**<br>**INRUSH CURRENT (Typ.)**<br>**LEAKAGE CURRENT**<br>**SAFETY STANDARDS**<br>**WORKING HUMIDITY**<br>**STORAGE TEMP., HUMIDITY**<br>**TEMP. COEFFICIENT**<br>**VIBRATION**<br>**MTBF**<br>**DIMENSION**<br>**OTHERS**<br>**NOTE**<br>**PACKING**<br>18.9W<br>59V<br>41V<br>500ms / 230VAC<br>180 ~ 277VAC          220 ~ 392VDC<br>47 ~ 63Hz<br>85%<br>20 ~ 90% RH non-condensing<br>-40 ~ +80<br>, 10 ~ 95% RH<br>℃<br>10 ~ 500Hz, 2G 10min./1cycle, period for  60min. each along X, Y, Z axes<br>℃<br>℃<br>℃<br>**OPEN CIRCUIT VOLTAGE (max.)**<br>**ENVIRONMENT**<br>**SAFETY &**<br>**FUNCTION**<br>**EMC**<br>**PROTECTION**<br>**WITHSTAND VOLTAGE**<br>**ISOLATION RESISTANCE**<br>I/P-O/P:>100M Ohms / 500VDC / 25<br>/ 70% RH<br>℃<br>**CURRENT LEVEL**<br>350mA<br>600mA<br>500mA<br>700mA(default)<br>900mA<br>1050mA<br>**CURRENT TOLERANCE**<br>**SHORT CIRCUIT**<br>**OVER TEMPERATURE**<br>**SYNCHRONIZATION**<br>Constant current limiting, recovers automatically after fault condition is removed<br>Please refer to "SYNCHRONIZATION OPERATION” section<br>**DIMMING**<br>Please refer to "DIMMING OPERATION" section<br>**TOTAL HARMONIC DISTORTION**<br><0.5mA / 240VAC<br>PF<br>0.94/230VAC, PF<br>0.91/277VAC<br>≧<br>≧<br>@full load<br>(Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)<br>COLD START 20A(t<br>=260 s measured at 50% I<br>) at 230VAC<br>width<br>peak<br>μ<br>;Per NEMA 410<br>±5%<br>±0.03%/<br>(0 ~ 50<br>)<br>℃<br>℃<br>**MAX. No. of PSUs on 16A**<br>**CIRCUIT BREAKER**<br>26 units (circuit breaker of type B) / 44 units  (circuit breaker of type C) at 230VAC<br>(Please refer to "STATIC CHARACTERISTIC" section)<br>**WORKING TEMP.**<br>**MAX. CASE TEMP.**<br>Tcase=+85℃<br>Tcase=-30 ~ +85<br>(Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)<br>℃<br>**CURRENT RIPPLE**<br>5.0% max. @rated current<br>Current level selectable via DIP switch, please refer to”DIP SWITCH TABLE” section<br>THD< 20%(<br>)<br>@load 50%/230VAC; @load 75%/277VAC<br>≧<br>≧<br>(Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)<br>Compliance to EN55015, EN61000-3-2 Class C(@load<br>50%) ; EN61000-3-3;<br>≧<br>GB17625.1,GB17743, EAC TP TC 020<br>**EMC IMMUNITY**<br><0.5W<br>**STANDBY POWER**<br>**CONSUMPTION**<br>**Note.5**<br>**EMC EMISSION**<br>**Note.6**<br>Compliance to EN61000-4-2,3,4,5,6,8,11, EN61547, light industry level surge immunity Line-Line 2KV , EAC TP TC 020<br>(<br>)<br>6 ~ 50V<br>6 ~ 54V<br>6 ~ 42V<br>6 ~ 36V<br>6 ~ 24V<br>6 ~ 28V<br>25.2W<br>0.17A/230VAC          0.15A/277VAC<br>Shut down o/p voltage, recovers automatically after temperature goes down<br>I/P-O/P:3.75KVAC ; O/P-KN<br>:500VDC<br>±<br>213.3K hrs min.      MIL-HDBK-217F (25<br>)<br>℃<br>105*68*23mm (L*W*H)<br>0.173Kg ; 72pcs/13.5Kg/1.04CUFT<br>CSA C22.2 No.250.13-12,<br>GB19510.14,GB19510.1,<br>ENEC EN61347-1, EN61347-2-13, EN62384  independent,<br>EAC TP TC 004 approved<br>**KNX STANDARDS**<br>certification<br>1. All parametersNOT specially mentioned are measured at230VAC input, rated current and 25 _ofambienttemperature.<br>2. De-rating may be needed under low input voltages. Please refer to “STATIC CHARACTERISTIC” sections for details.<br>3. Length of set up time is measured at first cold start. Turning ON/OFF the driver may lead to increase of the set up time.<br>4. Efficiency is measured at 500mA/50V output set by DIP switch.<br>5. Standby power consumption is measured at 230VAC.<br>6. The driver is considered as a component that will be operated in combination with final equipment. Since EMC performance will be affected by the<br>complete installation, the final equipment manufacturers must re-qualify EMC Directive on the complete installation again.<br>7. The ambient temperature derating of 3.5<br>/1000m with fanless models and of<br>5<br>/1000m with fan models for operating altitude higher than 2000m(6500ft).|**LCM-25KN**|**LCM-25KN**|**LCM-25KN**|**LCM-25KN**|**LCM-25KN**|**LCM-25KN**|
|---|---|---|---|---|---|---|---|
||**CURRENT LEVEL**|350mA<br>600mA<br>500mA<br>700mA(default)<br>900mA<br>1050mA<br>Current level selectable via DIP switch, please refer to”DIP SWITCH TABLE” section||||||
||**RATED POWER**|18.9W|25.2W|||||
||**DC VOLTAGE RANGE**|6 ~ 54V|6 ~ 50V|6 ~ 42V|6 ~ 36V|6 ~ 28V|6 ~ 24V|
||**OPEN CIRCUIT VOLTAGE (max.)**|59V|||41V|||
||**CURRENT RIPPLE**|5.0% max. @rated current||||||
||**CURRENT TOLERANCE**|±5%||||||
||**SETUP TIME**<br>**Note.3**|500ms / 230VAC||||||
||**VOLTAGE RANGE**<br>**Note.2**|180 ~ 277VAC          220 ~ 392VDC<br>(Please refer to "STATIC CHARACTERISTIC" section)||||||
||**FREQUENCY RANGE**|47 ~ 63Hz||||||
||**POWER FACTOR (Typ.)**|PF<br>0.94/230VAC, PF<br>0.91/277VAC<br>≧<br>≧<br>@full load<br>(Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)||||||
||**TOTAL HARMONIC DISTORTION**|THD< 20%(<br>)<br>@load 50%/230VAC; @load 75%/277VAC<br>≧<br>≧<br>(Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)||||||
||**EFFICIENCY (Typ.)**<br>**Note.4**|85%||||||
||**AC CURRENT (Typ.)**|0.17A/230VAC          0.15A/277VAC||||||
||**INRUSH CURRENT (Typ.)**|COLD START 20A(t<br>=260 s measured at 50% I<br>) at 230VAC<br>width<br>peak<br>μ<br>;Per NEMA 410||||||
||**MAX. No. of PSUs on 16A**<br>**CIRCUIT BREAKER**|26 units (circuit breaker of type B) / 44 units  (circuit breaker of type C) at 230VAC||||||
||**LEAKAGE CURRENT**|<0.5mA / 240VAC||||||
||**STANDBY POWER**<br>**CONSUMPTION**<br>**Note.5**|<0.5W||||||
||**SHORT CIRCUIT**|Constant current limiting, recovers automatically after fault condition is removed||||||
||**OVER TEMPERATURE**|Shut down o/p voltage, recovers automatically after temperature goes down||||||
||**DIMMING**|Please refer to "DIMMING OPERATION" section||||||
||**SYNCHRONIZATION**|Please refer to "SYNCHRONIZATION OPERATION” section||||||
||**WORKING TEMP.**|Tcase=-30 ~ +85<br>(Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)<br>℃||||||
||**MAX. CASE TEMP.**|Tcase=+85℃||||||
||**WORKING HUMIDITY**|20 ~ 90% RH non-condensing||||||
||**STORAGE TEMP., HUMIDITY**|-40 ~ +80<br>, 10 ~ 95% RH<br>℃||||||
||**TEMP. COEFFICIENT**|±0.03%/<br>(0 ~ 50<br>)<br>℃<br>℃||||||
||**VIBRATION**|10 ~ 500Hz, 2G 10min./1cycle, period for  60min. each along X, Y, Z axes||||||
||**SAFETY STANDARDS**|CSA C22.2 No.250.13-12,<br>GB19510.14,GB19510.1,<br>ENEC EN61347-1, EN61347-2-13, EN62384  independent,<br>EAC TP TC 004 approved||||||
||**KNX STANDARDS**|certification||||||
||**WITHSTAND VOLTAGE**|I/P-O/P:3.75KVAC ; O/P-KN<br>:500VDC<br>±||||||
||**ISOLATION RESISTANCE**|I/P-O/P:>100M Ohms / 500VDC / 25<br>/ 70% RH<br>℃||||||
||**EMC EMISSION**<br>**Note.6**|Compliance to EN55015, EN61000-3-2 Class C(@load<br>50%) ; EN61000-3-3;<br>≧<br>GB17625.1,GB17743, EAC TP TC 020||||||
||**EMC IMMUNITY**|Compliance to EN61000-4-2,3,4,5,6,8,11, EN61547, light industry level surge immunity Line-Line 2KV , EAC TP TC 020<br>(<br>)||||||
||**MTBF**|213.3K hrs min.      MIL-HDBK-217F (25<br>)<br>℃||||||
||**DIMENSION**|105*68*23mm (L*W*H)||||||
||**PACKING**<br>℃<br>℃<br>℃<br>0.173Kg ; 72pcs/13.5Kg/1.04CUFT<br>1. All parametersNOT specially mentioned are measured at230VAC input, rated current and 25 _ofambienttemperature.<br>2. De-rating may be needed under low input voltages. Please refer to “STATIC CHARACTERISTIC” sections for details.<br>3. Length of set up time is measured at first cold start. Turning ON/OFF the driver may lead to increase of the set up time.<br>4. Efficiency is measured at 500mA/50V output set by DIP switch.<br>5. Standby power consumption is measured at 230VAC.<br>6. The driver is considered as a component that will be operated in combination with final equipment. Since EMC performance will be affected by the<br>complete installation, the final equipment manufacturers must re-qualify EMC Directive on the complete installation again.<br>7. The ambient temperature derating of 3.5<br>/1000m with fanless models and of<br>5<br>/1000m with fan models for operating altitude higher than 2000m(6500ft).|||||||



_File Name:LCM-25KN-SPEC   2019-11-19_ 

**LCM - 25KN series** 

## 25W Multiple-Stage Constant Current Mode LED Driver 

## **BLOCK DIAGRAM** 

**==> picture [476 x 415] intentionally omitted <==**

**----- Start of picture text -----**<br>
BLOCK DIAGRAM PFC fosc : 45KHz<br>PWM fosc : 70KHz<br>EMI FILTER PFC POWER RECTIFIERS +V<br>I/P & CIRCUIT SWITCHING & -V<br>RECTIFIERS FILTER<br>CURRENT<br>LIMITING<br>O.L.P.<br>PWM DETECTION<br>PFC CONTROL CIRCUIT<br>CONTROL<br>O.T.P.<br>MCU<br>PUSH<br>KNX+<br>KNX-<br>DIP SWITCH TABLE<br>LCM-25KN is a multiple-stage constant current driver, selection of output current through DIP switch is exhibited below.<br>DIP S.W. Max.LED<br>Io 1 2 3 4 5 6 voltage<br>350mA ---- ---- ---- ---- ---- ---- 54V<br>500mA ON ---- ---- ---- ---- ---- 50V 1<br>600mA ON ON ---- ---- ---- ---- 42V ON 2<br>3<br>700mA(factory default) ON ON ON ---- ---- ON 36V<br>1 2 3 4 5 6 1<br>900mA ON ON ON ON ---- ON 28V 2<br>3<br>4<br>1050mA ON ON ON ON ON ON 24V<br>More current options through DIP switch are listed below.<br>ON<br>DIP S.W. Max.LED 1 2 3 4 5 6<br>Io 1 2 3 4 5 6 voltage<br>**----- End of picture text -----**<br>


|Io<br>DIP S.W.|1|2|3|4|5|6|Max.LED<br>voltage|
|---|---|---|---|---|---|---|---|
|450mA|----|ON|----|----|----|----|54V|
|550mA|----|----|----|ON|----|----|46V|
|800mA|ON|ON|----|ON|----|----|31V|



Note： The Max. LED voltage connected at the output should be always less than the table above. 

_File Name:LCM-25KN-SPEC   2019-11-19_ 

**LCM - 25KN series** 

25W Multiple-Stage Constant Current Mode LED Driver 

## **DIMMING OPERATION** 

## ※ **KNX interface** 

- Apply KNX Bus cable between KNX+ and KNX- 

- �The application program(database) can be downloaded via Online Catalogs from ETS or via http://www.meanwell.com/productCatalog.aspx 

|**Parametrization options**|**Description**|
|---|---|
|Switch functions|�Turn on brightness<br>Dimming speed for turn on/off<br>�<br>Switch telegram and status<br>�<br>Switch on/off delay<br>�|
|Dimming|�Dimming speed for 0~100%<br>Allow switch on via relative dimming<br>�<br>P<br>�ush dimming with AC inut port<br>lock object for push dimming<br>�B|
|Brightness value|�Dimming speed for transition brightness values<br>Permit set switch on and off brightness via value<br>�<br>Brightness value and status<br>�|
|Fault message|�Lamp fault<br>AC/DC input monitor fault messages<br>�|
|Other functions|�Reaction on KNX voltage failure/recovery<br>Power-On level<br>�<br>Dimming curve select(linear/log)<br>�<br>�Synchronous dimming output<br>Block function(Block1&Block2)<br>�<br>Staircase lighting function(multi-stage switch-off)<br>�|
|General function|Cyclic monitoring telegram(In operation)<br>�|
|8 Scenes|�Recall and save via KNX with 8-bit telegram|
|Operating hours & CLO|�Operating hours counter<br>Constant light out(5 scheduled divisions)<br>�|
|Power consumption feedback|�Power consumption report|



## ※ **PUSH dimming or AC/DC input monitor(Primary side)** 

## ◎ **PUSH dimming** 

LCM-25KN 

PUSH Push Button AC/N AC/N (or Backup DC- input) AC/L AC/L (or Backup DC+ input) 

- �The detail function of PUSH dimming, please refer to the database. 

- �Up to 10 drivers can perform the PUSH dimming at the same time when utilizing one common push button. 

- �The maximum length of the cable from the push button to the last driver is 20 meters. 

- �The additive push button can be connected only between the PUSH terminal, as displayed in the diagram, and AC/L (in brown or black); it will lead to short circuit if it is connected to AC/N. 

- �In case the PUSH dimming is set locally, up to 10 drivers can perform the PUSH dimming at the same time when utilizing one common push button. 

- �In case the PUSH dimming is set independently via ETS, the number of drivers is done through group address and determined by the ETS project designer. 

## ◎ **AC/DC input monitor** 

LCM-25KN PUSH AC/N AC/N (or Backup DC- input) AC/L AC/L (or Backup DC+ input) 

- �KNX Bus need to connected when using AC/DC input monitor 

- �The detail function of AC/DC input monitor, please refer to the database. 

_File Name:LCM-25KN-SPEC   2019-11-19_ 

> 25W Multiple-Stage Constant Current Mode LED Driver **LCM - 25KN series** 

## **SYNCHRONIZATION OPERATION** 

- �Synchronization up to 10 drivers (1 master + 9 slaves) �Dimming operating range : 10%~100% 

- �Sync cable length : < 5m �Sync cable type : Flat cable 

2 

- �Sync cable cross section area : 22 – 24 AWG (0.2~0.3mm ) 

**==> picture [356 x 114] intentionally omitted <==**

**----- Start of picture text -----**<br>
SYN. SYN. SYN.<br>LCM-25 LCM-25KN LCM-25<br>(Slave 2) - (Master) - (Slave 1) -<br>5m 5m<br>NOTE: 1. Please make sure all units are set to 100% dimming setting (factory default) before synchronizing.<br>2. Min. Dimming operating range depends on database setting.<br>+ + +<br>**----- End of picture text -----**<br>


_File Name:LCM-25KN-SPEC   2019-11-19_ 

**LCM - 25KN series** 

25W Multiple-Stage Constant Current Mode LED Driver 

## **OUTPUT LOAD vs TEMPERATURE** 

**==> picture [486 x 147] intentionally omitted <==**

**----- Start of picture text -----**<br>
Others<br>100 100<br>80 80<br>60 1050mA 60<br>40 40<br>900mA<br>20 20<br>-30 -15 0 15 30 40 45 50 55 60 70 (HORIZONTAL) -30 -25 0 20 45 55 65 75 85 (HORIZONTAL)<br>AMBIENT TEMPERATURE,Ta ( ℃ ) Tcase ( ℃ )<br>LOAD (%) LOAD (%)<br>**----- End of picture text -----**<br>


**==> picture [126 x 12] intentionally omitted <==**

**----- Start of picture text -----**<br>
STATIC CHARACTERISTIC<br>**----- End of picture text -----**<br>


**==> picture [201 x 159] intentionally omitted <==**

**----- Start of picture text -----**<br>
100<br>90<br>80<br>70<br>60<br>50<br>40<br>180 190 200 210 220 230 240 250 260 270 277<br>INPUT VOLTAGE (V) 60Hz<br>※De-rating is needed under low input voltage.<br>LOAD (%)<br>**----- End of picture text -----**<br>


_File Name:LCM-25KN-SPEC   2019-11-19_ 

**LCM - 25KN series** 

25W Multiple-Stage Constant Current Mode LED Driver 

## **TOTAL HARMONIC DISTORTION (THD)** 

**==> picture [492 x 628] intentionally omitted <==**

**----- Start of picture text -----**<br>
※ Tcase at 75℃<br>25 45<br>40<br>20 35<br>: 350mA 30 ~_— 350mA<br>15 = 500mA 25 as 500mA<br>: 600mA -~ 600mA<br>20<br>10 : 700mA 700mA<br>: 900mA 15 ee 900mA<br>5 : 1050mA 10 eo 1050mA<br>5<br>0 0<br>10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%<br>LOAD LOAD<br>(230Vac Input) (277Vac Input)<br>7 POWER FACTOR (PF) CHARACTERISTIC<br>※ Tcase at 75℃<br>1<br>1<br>0.95 0.95<br>0.9<br>0.9<br>0.85<br>0.85 i 350mA 0.8 —~— 350mA<br>0.8 500mA 0.75 500mA<br>= 600mA 0.7 —- 600mA<br>0.75<br>= 700mA 0.65 Seem 700mA<br>0.7 - 900mA 0.6 == 900mA<br>0.65 - 1050mA 0.55 ~~ 1050mA<br>0.5<br>0.6 0.45<br>0.4<br>0.55<br>10% 20% 30% 40% 50% 60% 70% 80% 90% 100%<br>10% 20% 30% 40% 50% 60% 70% 80% 90% 100%<br>(25W) (25W)<br>LOAD LOAD<br>(230Vac Input) (277Vac Input)<br>: EFFICIENCY vs LOAD<br>LCM-25KN series possess superior working efficiency that up to 86% can be reached in field applications.<br>※ Tcase at 75℃<br>90 90<br>85 85<br>80 80<br>75 e e - 350mA 75 350mA<br>70 500mA 70 500mA<br>600mA 600mA<br>65 BZ = 65 ,<br>700mA 700mA<br>60 900mA 60 900mA<br>j : ~_<br>55 : 1050mA 55 1050mA<br>50 / : 50 :<br>45 45<br>10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%<br>LOAD LOAD<br>(230Vac Input) (277Vac Input)<br>THD THD<br>PF PF<br>EFFICIENCY (%) EFFICIENCY (%)<br>**----- End of picture text -----**<br>


_File Name:LCM-25KN-SPEC   2019-11-19_ 

**LCM - 25KN series** 

25W Multiple-Stage Constant Current Mode LED Driver 

## **MECHANICAL SPECIFICATION** 

**==> picture [476 x 449] intentionally omitted <==**

**----- Start of picture text -----**<br>
Case No.LCM-25          Unit:mm<br>105<br>6 93<br>6 1<br>2<br>TB1<br>6 3<br>1<br>2<br>34 TB2<br>TB4<br>ON<br>1 2 3 4 5 6<br>40.8 45.5<br>7.8 7.8<br>2-ψ4<br>4<br>Bottom View<br>※ Terminal Pin No. Assignment(TB1)<br>Pin No. Assignment<br>1 AC/L<br>2 AC/N<br>3 PUSH<br>※ Terminal Pin No. Assignment(TB2)<br>Pin No. Assignment Pin No. Assignment<br>1 +Vo 3 -SYN.<br>2 -Vo 4 +SYN.<br>※ Terminal Pin No. Assignment(TB4)<br>Pin No. Assignment<br>1 KNX-<br>2 KNX+<br>4.2<br>ψ<br>2-<br>23<br>68 62<br>**----- End of picture text -----**<br>


## **INSTALLATION MANUAL** 

Please refer to : http://www.meanwell.com/manual.html 

_File Name:LCM-25KN-SPEC   2019-11-19_
Updated at April 17, 2026
About Novapart

Novapart is a B2B electronic component broker specialising in stock shortages and cost reduction. We source hard-to-find parts and identify compliant alternatives across a catalogue of 410,000+ components from 500+ manufacturers.
Learn more →
Stock Shortage Specialist

When a component is unavailable, discontinued or has an unacceptable lead time, we tap into our network of vetted European and Asian distributors to source what you need — without compromising on quality or traceability.
Request a quote →
Compliant Alternatives

We identify pin-to-pin, electrically equivalent substitutes that meet the same certifications (RoHS, AEC-Q100, REACH) as your original specification — validated against datasheets, not just part numbers. Often at a lower cost.
BOM Analysis service →