LDC-55DA2

LED Driver, 55 W, 56 VDC, 1.6 A, Constant Current, Constant Voltage, 180 VAC

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Manufacturer: MEAN WELL
Product type: AC / DC LED Power Supplies
SVHC: No SVHC (25-Jun-2025)
Product Range: LDC-55
Output Current: 1.6A
LED Driver Mode: Constant Current, Constant Voltage
Output Power Max: 55W
Input Voltage Max: 295VAC
Input Voltage Min: 180VAC
Output Voltage Max: 56VDC
Power Supply Applications: -
Delivery and price
Units per pack	100
Price	38.89 €
Current stock	10+
Lead time	30 days
Datasheet
**LDC - 55  series** 

55W Constant Power MODE Linear LED Driver 

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||****<br><br><br><br>~~i~~|
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_File Name:LDC-55-SPEC   2020-05-25_ 

**LDC - 55  series** 

55W Constant Power MODE Linear LED Driver 

## **SPECIFICATION** 

|**MODEL**<br>**OUTPUT CURRENT REGION**<br>**RATED POWERNote.2**<br>**OUTPUT**<br>**SET UP TIME    Note.4**<br>**VOLTAGE RANGENote.3**<br>**FREQUENCY RANGE**<br>**POWER FACTOR(Typ.)**<br>**EFFICIENCY (Typ.)Note.6**<br>**AC CURRENT (Typ.)**<br>**INPUT**<br>**INRUSH CURRENT(Typ.)**<br>**LEAKAGE CURRENT**<br>**SAFETY STANDARDSNote.5**<br>**EMC IMMUNITY**<br>**WORKING TEMP.**<br>**WORKING HUMIDITY**<br>**STORAGE TEMP., HUMIDITY**<br>**TEMP. COEFFICIENT**<br>**VIBRATION**<br>**MTBF**<br>**DIMENSION**<br>**OTHERS**<br>**NOTE**<br>**PACKING**<br>**OVER TEMPERATURE**<br>500ms/230VAC<br>(Please refer to "STATIC CHARACTERISTIC"section)<br>47 ~ 63Hz<br> PF≧0.95/230VAC@load≧50%; PF≧0.9/277VAC@load≧75%<br>(Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)<br>0.35A / 230VAC        0.25A / 277VAC<br><0.75mA / 277VAC<br>Compliance toEN55015,EN61000-3-2  Class C (@load≧50%) ; EN61000-3-3;GB/T17743,GB17625.1,EAC TP TC 020<br>20 ~ 95% RH non-condensing<br>-40 ~ +80℃, 10 ~ 95% RH<br>±0.03%/℃(0 ~ 60℃)<br>10 ~ 500Hz, 2G 10min./1cycle, period for  60min. each along X, Y, Z axes<br>226.1Khrs min.      MIL-HDBK-217F (25℃)<br>320*30*21mm (L*W*H)<br>**ENVIRONMENT**<br>**EMC EMISSIONNote.5**<br>**SAFETY &**<br>**EMC**<br>**PROTECTION**<br>Shut down o/p voltage, with auto-recovery<br>**SHORT CIRCUIT**<br>90%(230VAC@Full load)<br>Hiccup mode or constant current limiting ,recovers automatically after fault condition is removed<br>I/P-O/P:3.75KVAC     I/P-FG:2.0KVAC     O/P-FG:1.5KVAC<br>I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH<br>**WITHSTAND VOLTAGE**<br>**ISOLATION RESISTANCE**<br>**CURRENT TOLERANCE**<br>±5.0%<br>**CONSTANT CURRENT REGION Note.2**<br>THD< 10%(@load≧50%/230VAC; @load≧75%/277VAC)<br>(Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)<br>**TOTAL HARMONIC DISTORTION**<br>**OPEN CIRCUIT VOLTAGE(max.)**<br>COLD START 30A(twidth=300μs measured at 50% Ipeak)/230VAC;Per NEMA 410<br>**MAX. No. of PSUs on 16A**<br>**CIRCUIT BREAKER**<br>17 units (circuit breaker of type B) / 29 units  (circuit breaker of type C) at 230VAC<br>Tcase=-25 ~ +80℃(Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)<br>**MAX. CASE TEMP.**Tcase=+80℃<br>Compliance to EN61000-4-2,3,4,5,6,8,11; EN61547, light industry level(surge immunity:Line-Earth:2KV,Line-Line:1KV),EAC TP TC 020<br>℃<br><br><br><br><br><br><br><br><br><br>℃<br>****<br><br>℃℃<br>0.255Kg;48pcs/13.24Kg/0.92CUFT<br>**LOW FREQUENCY**<br>3.0% max. @rated current<br>180 ~ 295VAC<br>27 ~ 56V<br>**LDC-55**<br>500 ~ 1600mA(1050mA default)<br>55W<br>60V<br>Compliance to IEC62386-101.102.207 for DA-Type only<br>**DALI STANDARDS**<br>**DIMMING**<br>**TEMP. COMPENSATION**<br>**FUNCTION**<br>By external NTC, please refer to“TEMPERATURE COMPENSATION OPERATION”section<br>Please refer to“DIMMING OPERATION”section<br>**CURRENT RIPPLE**<br>**OVER VOLTAGE**<br>Shut down o/p voltage with auto-recovery or re-power on to recovery<br>61 ~ 80V<br>**FULL POWER CURRENT RANGE**980 ~ 1600mA<br>UL8750, CSA C22.2 No. 250.13-12; ENEC EN61347-1, EN61347-2-13, AS/NZS 61347.1:2016, AS/NZS IEC 61347.2.13:2013;<br>EN62384; GB19510.14,GB19510.1, EAC TP TC 004, BISIS15885 approved|**MODEL**<br>**OUTPUT CURRENT REGION**<br>**RATED POWERNote.2**<br>**OUTPUT**<br>**SET UP TIME    Note.4**<br>**VOLTAGE RANGENote.3**<br>**FREQUENCY RANGE**<br>**POWER FACTOR(Typ.)**<br>**EFFICIENCY (Typ.)Note.6**<br>**AC CURRENT (Typ.)**<br>**INPUT**<br>**INRUSH CURRENT(Typ.)**<br>**LEAKAGE CURRENT**<br>**SAFETY STANDARDSNote.5**<br>**EMC IMMUNITY**<br>**WORKING TEMP.**<br>**WORKING HUMIDITY**<br>**STORAGE TEMP., HUMIDITY**<br>**TEMP. COEFFICIENT**<br>**VIBRATION**<br>**MTBF**<br>**DIMENSION**<br>**OTHERS**<br>**NOTE**<br>**PACKING**<br>**OVER TEMPERATURE**<br>500ms/230VAC<br>(Please refer to "STATIC CHARACTERISTIC"section)<br>47 ~ 63Hz<br> PF≧0.95/230VAC@load≧50%; PF≧0.9/277VAC@load≧75%<br>(Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)<br>0.35A / 230VAC        0.25A / 277VAC<br><0.75mA / 277VAC<br>Compliance toEN55015,EN61000-3-2  Class C (@load≧50%) ; EN61000-3-3;GB/T17743,GB17625.1,EAC TP TC 020<br>20 ~ 95% RH non-condensing<br>-40 ~ +80℃, 10 ~ 95% RH<br>±0.03%/℃(0 ~ 60℃)<br>10 ~ 500Hz, 2G 10min./1cycle, period for  60min. each along X, Y, Z axes<br>226.1Khrs min.      MIL-HDBK-217F (25℃)<br>320*30*21mm (L*W*H)<br>**ENVIRONMENT**<br>**EMC EMISSIONNote.5**<br>**SAFETY &**<br>**EMC**<br>**PROTECTION**<br>Shut down o/p voltage, with auto-recovery<br>**SHORT CIRCUIT**<br>90%(230VAC@Full load)<br>Hiccup mode or constant current limiting ,recovers automatically after fault condition is removed<br>I/P-O/P:3.75KVAC     I/P-FG:2.0KVAC     O/P-FG:1.5KVAC<br>I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH<br>**WITHSTAND VOLTAGE**<br>**ISOLATION RESISTANCE**<br>**CURRENT TOLERANCE**<br>±5.0%<br>**CONSTANT CURRENT REGION Note.2**<br>THD< 10%(@load≧50%/230VAC; @load≧75%/277VAC)<br>(Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)<br>**TOTAL HARMONIC DISTORTION**<br>**OPEN CIRCUIT VOLTAGE(max.)**<br>COLD START 30A(twidth=300μs measured at 50% Ipeak)/230VAC;Per NEMA 410<br>**MAX. No. of PSUs on 16A**<br>**CIRCUIT BREAKER**<br>17 units (circuit breaker of type B) / 29 units  (circuit breaker of type C) at 230VAC<br>Tcase=-25 ~ +80℃(Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)<br>**MAX. CASE TEMP.**Tcase=+80℃<br>Compliance to EN61000-4-2,3,4,5,6,8,11; EN61547, light industry level(surge immunity:Line-Earth:2KV,Line-Line:1KV),EAC TP TC 020<br>℃<br><br><br><br><br><br><br><br><br><br>℃<br>****<br><br>℃℃<br>0.255Kg;48pcs/13.24Kg/0.92CUFT<br>**LOW FREQUENCY**<br>3.0% max. @rated current<br>180 ~ 295VAC<br>27 ~ 56V<br>**LDC-55**<br>500 ~ 1600mA(1050mA default)<br>55W<br>60V<br>Compliance to IEC62386-101.102.207 for DA-Type only<br>**DALI STANDARDS**<br>**DIMMING**<br>**TEMP. COMPENSATION**<br>**FUNCTION**<br>By external NTC, please refer to“TEMPERATURE COMPENSATION OPERATION”section<br>Please refer to“DIMMING OPERATION”section<br>**CURRENT RIPPLE**<br>**OVER VOLTAGE**<br>Shut down o/p voltage with auto-recovery or re-power on to recovery<br>61 ~ 80V<br>**FULL POWER CURRENT RANGE**980 ~ 1600mA<br>UL8750, CSA C22.2 No. 250.13-12; ENEC EN61347-1, EN61347-2-13, AS/NZS 61347.1:2016, AS/NZS IEC 61347.2.13:2013;<br>EN62384; GB19510.14,GB19510.1, EAC TP TC 004, BISIS15885 approved|**LDC-55**|
|---|---|---|
||**OUTPUT CURRENT REGION**|<br>500 ~ 1600mA(1050mA default)|
||**RATED POWERNote.2**|55W|
||**CONSTANT CURRENT REGION Note.2**|27 ~ 56V|
||**FULL POWER CURRENT RANGE**|980 ~ 1600mA|
||**OPEN CIRCUIT VOLTAGE(max.)**|60V|
||**LOW FREQUENCY**<br>**CURRENT RIPPLE**|3.0% max. @rated current|
||**CURRENT TOLERANCE**|±5.0%|
||**SET UP TIME    Note.4**|500ms/230VAC|
||**VOLTAGE RANGENote.3**|(Please refer to "STATIC CHARACTERISTIC"section)<br>180 ~ 295VAC|
||**FREQUENCY RANGE**|47 ~ 63Hz|
||**POWER FACTOR(Typ.)**|PF≧0.95/230VAC@load≧50%; PF≧0.9/277VAC@load≧75%<br>(Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)|
||**TOTAL HARMONIC DISTORTION**|THD< 10%(@load≧50%/230VAC; @load≧75%/277VAC)<br>(Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)|
||**EFFICIENCY (Typ.)Note.6**|90%(230VAC@Full load)|
||**AC CURRENT (Typ.)**|0.35A / 230VAC        0.25A / 277VAC|
||**INRUSH CURRENT(Typ.)**|COLD START 30A(twidth=300μs measured at 50% Ipeak)/230VAC;Per NEMA 410|
||**MAX. No. of PSUs on 16A**<br>**CIRCUIT BREAKER**|17 units (circuit breaker of type B) / 29 units  (circuit breaker of type C) at 230VAC|
||**LEAKAGE CURRENT**|<0.75mA / 277VAC|
||**SHORT CIRCUIT**|Hiccup mode or constant current limiting ,recovers automatically after fault condition is removed|
||**OVER VOLTAGE**|Shut down o/p voltage with auto-recovery or re-power on to recovery<br>61 ~ 80V|
||**OVER TEMPERATURE**|Shut down o/p voltage, with auto-recovery|
||**DIMMING**|Please refer to“DIMMING OPERATION”section|
||**TEMP. COMPENSATION**|<br>By external NTC, please refer to“TEMPERATURE COMPENSATION OPERATION”section|
||**WORKING TEMP.**|Tcase=-25 ~ +80℃(Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)|
||**MAX. CASE TEMP.**|Tcase=+80℃|
||**WORKING HUMIDITY**|20 ~ 95% RH non-condensing|
||**STORAGE TEMP., HUMIDITY**|-40 ~ +80℃, 10 ~ 95% RH|
||**TEMP. COEFFICIENT**|±0.03%/℃(0 ~ 60℃)|
||**VIBRATION**|10 ~ 500Hz, 2G 10min./1cycle, period for  60min. each along X, Y, Z axes|
||**SAFETY STANDARDSNote.5**|UL8750, CSA C22.2 No. 250.13-12; ENEC EN61347-1, EN61347-2-13, AS/NZS 61347.1:2016, AS/NZS IEC 61347.2.13:2013;<br>EN62384; GB19510.14,GB19510.1, EAC TP TC 004, BISIS15885 approved|
||**DALI STANDARDS**|Compliance to IEC62386-101.102.207 for DA-Type only|
||**WITHSTAND VOLTAGE**|I/P-O/P:3.75KVAC     I/P-FG:2.0KVAC     O/P-FG:1.5KVAC|
||**ISOLATION RESISTANCE**|I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH|
||**EMC EMISSIONNote.5**|Compliance toEN55015,EN61000-3-2  Class C (@load≧50%) ; EN61000-3-3;GB/T17743,GB17625.1,EAC TP TC 020|
||**EMC IMMUNITY**|Compliance to EN61000-4-2,3,4,5,6,8,11; EN61547, light industry level(surge immunity:Line-Earth:2KV,Line-Line:1KV),EAC TP TC 020|
||**MTBF**|226.1Khrs min.      MIL-HDBK-217F (25℃)|
||**DIMENSION**|320*30*21mm (L*W*H)|
||**PACKING**|0.255Kg;48pcs/13.24Kg/0.92CUFT|
||℃<br><br><br><br><br><br><br><br><br><br>℃<br>****<br><br>℃℃||



_File Name:LDC-55-SPEC   2020-05-25_ 

**LDC - 55 series** 

55W Constant Power MODE Linear LED Driver 

## **BLOCK DIAGRAM** 

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PFC fosc : 50~400KHz<br>PWM fosc : 30~200KHz<br>EMI FILTER POWER RECTIFIERS +V<br>I/P & SWITCHING & -V<br>RECTIFIERS FILTER<br>CP. DIM+<br>DIM-<br>(B Type)<br>O.T.P. O.L.P. DETECTION<br>PWM & PFC CIRCUIT<br>CONTROL<br>O.V.P.<br>CASE GROUND<br>OUTPUT CURRENT SETTING<br>◎I-V Operating Area.<br>Output rated current level can be adjusted by a additive resistance.<br>LDC-55<br>60V<br>56V<br>50V<br>40V<br>30V LDC-55<br>27V<br>20V<br>10V<br>0V<br>300mA 500mA 700mA 900mA 1100mA 1300mA 1500mA 1700mA<br>Vo+<br>CURRENT Vo+<br>Vo-<br>Vo-<br>NTC<br>TB2 IADJNTC<br>IADJ<br>IADJIADJ resistor<br>◎ Rated current setting table<br>18K 20K 24K 27K 30K 33K 36K 39K 43K 47K 56K 68K 91K 150K 200K NC<br>1.6A 1.52A 1.45A 1.32A 1.26A 1.2A 1.15A 1.11A 1.06A 1.03A 0.95A 0.88A 0.8A 0.7A 0.65A 0.5A<br>Note:output power≤55W<br>VOLTAGE<br>**----- End of picture text -----**<br>


_File Name:LDC-55-SPEC   2020-05-25_ 

**LDC - 55  series** 

55W Constant Power MODE Linear LED Driver 

## **DIMMING OPERATION** 

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Vo+<br>AC/L Vo+<br>Vo-<br>AC/N Vo-<br>FG NTC<br>NTC<br>IADJ<br>DA-;N IADJ<br>DA+;Ls DIM+<br>DIM-<br>**----- End of picture text -----**<br>


## ※ **3 in 1 dimming function(for B-Type)** 

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

- 0 ~ 10VDC, or 10V PWM signal or resistance. 

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

- ‧Dimming source current from power supply: 100μA (typ.) 

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◎ Applying additive 0 ~ 10VDC 100%<br>90%<br>80%<br>+<br>Vo+ + 70%<br>60%<br>-<br>Vo- - 50%<br>DIM+ 40%<br>+<br>Additive Voltage 30%<br>- 20%<br>DIM-<br>10%<br>“DO NOT connect "DIM- to Vo-" 0%<br>0V 1V 2V 3V 4V 5V 6V 7V 8V 9V 10V<br>Dimming input: Additive voltage<br>◎ Applying additive 10V PWM signal (frequency range 100Hz ~ 3KHz): 100%<br>90%<br>80%<br>+<br>Vo+ + 70%<br>60%<br>-<br>Vo- - 50%<br>DIM+ 40%<br>Additive PWM signal 30%<br>20%<br>DIM-<br>10%<br>“DO NOT connect "DIM- to Vo-" 0%<br>0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%<br>Duty cycle of additive 10V PWM signal dimming input<br>100%<br>◎ Applying additive resistance: 90%<br>80%<br>+<br>Vo+ + 70%<br>- 60%<br>Vo- - 50%<br>DIM+<br>40%<br>Additive Resistance 30%<br>20%<br>DIM-<br>10%<br>“DO NOT connect "DIM- to Vo-" 0%<br>Short 10K/N 20K/N 30K/N 40K/N 50K/N 60K/N 70K/N 80K/N 90K/N 100K/N<br>(N=driver quantity for synchronized dimming operation)<br>Dimming input: Additive resistance<br>Note : 1. Min. dimming level is about 8% and the output current is not defined when 0%< Iout<8%.<br>           2. The output current could drop down to 0% when dimming input is about  0Vdc or 10V PWM signal with 0% duty cycle.<br>           3. To ensure the dimming performance at low dimming level,output current must be over 75mA.<br>Output current (%)<br>Output current (%)<br>Output current (%)<br>**----- End of picture text -----**<br>


_File Name:LDC-55-SPEC   2020-05-25_ 

**LDC - 55  series** 

55W Constant Power MODE Linear LED Driver 

※ **DALI interface** 

|AC/L<br>AC/N<br>Vo-<br>Vo-<br>Vo+<br>Vo+<br>NTC<br>FG<br>DA+;Ls<br>DA-;N<br>NTC<br>IADJ<br>IADJ<br>Push Button<br>AC/L<br>◎**PUSH dimming(primary side)**<br>**Action**<br>**Function**<br>**Action duration**<br>Short push<br>0.1~1 sec.<br>Turn ON-OFF the driver<br>Long push<br>1.5~10 sec.<br>Every Long Push changes the dimming direction, dimming up or down<br>Reset<br>>11 sec.<br>Set up the dimming level to 100%<br>AC/N|||AC/L<br>AC/N<br>FG<br>DA+;Ls<br>DA-;N||Vo-<br>Vo-<br>Vo+<br>Vo+<br>NTC<br>NTC<br>IADJ<br>IADJ||
|---|---|---|---|---|---|---|
||||||||
||||||||



- **PUSH dimming(primary side)** 

- ‧The factory default dimming level is at 100%. 

- ‧If the push action lasts less than 0.05 sec., it will not lead to a change for the status of the driver. ‧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 LS 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. 

## ◎ **DALI interface(primary side)** 

- ‧Apply DALI signal between DA+ and DA- 

- ‧DALI protocol comprises 16 groups and 64 addresses. 

- ‧First step is fixed at 8% of rated output power. 

**NOTE: DALI, Push dimming can not be used in the same time!(The factory setting defaults to DA)** 

_File Name:LDC-55-SPEC   2020-05-25_ 

**LDC - 55  series** 

55W Constant Power MODE Linear LED Driver 

## **TEMPERATURE COMPENSATION OPERATION** 

LDC-55 have the built-in temperature compensation function ; by connecting a temperature sensor (NTC terminal) between the _+NTC / -NTC_ terminal of LDC-55 and the detecting point on the lighting system or the surrounding environment, output current of LDC-55 could be correspondingly changed, based on the sensed temperature, to ensure the long life of LED. 

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Vo+<br>Vo+<br>Vo-<br>Vo-<br>NTC<br>NTC<br>IADJ<br>NTC resistor<br>IADJ<br>DIM+<br>DIM-<br>**----- End of picture text -----**<br>


- LDC-55 can still be operated normally when the NTC resistor is not connected and the value of output current will be the current level selected through the IADJ. pin 

- ◎ NTC reference: 

NTC resistance Output Current <33K Output current reduce as the resistance decreases >33K Normal output current 

Notes: 1. MEAN WELL does not offer the NTC resistor and all the data above are measured by using resistor. 

2. If new brand of NTC resistor is applied,please check the temperature curve first. ◎ Dimming function of the driver will be invalid when the "temperature compensation" function is in use. 

_File Name:LDC-55-SPEC   2020-05-25_ 

**LDC - 55 series** 

55W Constant Power MODE Linear LED Driver 

## **OUTPUT LOAD vs TEMPERATURE** 

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100 100<br>80 80<br>60 60<br>40 40<br>20 20<br>-25 -10 0 15 30 50 60 65 (HORIZONTAL) -25 -10 0 20 35 45 55 65 80 (HORIZONTAL)<br>AMBIENT TEMPERATURE,Ta ( ℃ ) Tcase ( ℃ )<br>LOAD (%) LOAD (%)<br>**----- End of picture text -----**<br>


## **STATIC CHARACTERISTIC** 

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100<br>90<br>80<br>70<br>60<br>50<br>40<br>180 190 200 210 220 230 240 295<br>INPUT VOLTAGE (V) 60Hz<br>LOAD (%)<br>**----- End of picture text -----**<br>


## **POWER FACTOR (PF) CHARACTERISTIC** 

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※ Tcase at 75℃<br>1<br>0.98<br>0.96<br>277V<br>0.94<br>230V<br>0.92<br>0.9<br>0.88<br>50% 60% 70% 80% 90% 100%<br>(55W)<br>LOAD<br>(230Vac Input)<br>PF<br>**----- End of picture text -----**<br>


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

## **EFFICIENCY vs LOAD** 

LDC-55 series possess superior working efficiency up to 90%. 

## ※ 1100mA Model, Tcase at 75℃ 

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10%<br>9%<br>8%<br>277VAC<br>7%<br>230VAC<br>6%<br>5%<br>4%<br>3%<br>50% 60% 70% 80% 90% 100%<br>LOAD<br>THD<br>**----- End of picture text -----**<br>


## ※ 1100mA Model, Tcase at 75℃ 

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96<br>94<br>92<br>90<br>88<br>86<br>84 277V<br>82<br>230V<br>80<br>78<br>76<br>74<br>72<br>70<br>10% 20% 30% 40% 50% 60% 70% 80% 90% 100%<br>LOAD<br>EFFICIENCY(%)<br>**----- End of picture text -----**<br>


_File Name:LDC-55-SPEC   2020-05-25_ 

**LDC - 55 series** 

55W Constant Power MODE Linear LED Driver 

## **LIFE TIME** 

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120<br>100<br>80<br>60<br>40<br>20<br>0<br>25 30 35 40 45 50 55 60 65 70 75 80<br>Tcase (    ) ℃<br>LIFETIME(Kh)<br>**----- End of picture text -----**<br>


_File Name:LDC-55-SPEC   2020-05-25_ 

**LDC - 55  series** 

## 55W Constant Power MODE Linear LED Driver 

## **MECHANICAL SPECIFICATION** 

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**----- Start of picture text -----**<br>
CASE NO.: 258A       Unit:mm<br>320<br>313 3.5<br>ψ4.5 TB1  tc 85  TB2 ψ4.5<br>‧     : Max. Case Temperaturetc<br>15 5 15<br>30<br>21<br>9.5<br>**----- End of picture text -----**<br>


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**----- Start of picture text -----**<br>
Terminal Pin No.  Assignment (TB1) : Terminal Pin No.  Assignment (TB2) :<br>Pin No. Assignment Pin No. Assignment<br>1 ACL 1 Vo+ <br><br>2 ACN 2 Vo+<br><br>3 NC 3 Vo- <br>4 FG 4 Vo-  <br>5 NC(for DA-type only ) 5 NTC   <br>6 (for DA-type only) 6 NTC<br>7 (for DA-type only) 7 IADJ<br>8 IADJ<br>9 DIM+(for B-type only)<br>10 DIM-(for B-type only)<br> <br>8-9mm 8-9mm<br> <br>**----- End of picture text -----**<br>


## **Installation Manual** 

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

_File Name:LDC-55-SPEC   2020-05-25_
Updated at April 17, 2026
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