Mean Well NLDD-H Series DC-DC Constant Current LED Driver
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- DC-DC Buck Driver (350–1400mA Output)
- Wide Input (10–56VDC), Output (6–52VDC)
- Replaces LDD, LDH & LDB Series
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Product Details
| OUTPUT RANGE: 350mA to 1400mA constant current | INPUT VOLTAGE: 10–56VDC (59V max.) |
| OUTPUT VOLTAGE: 6–52VDC | REPLACES: LDD-L/H, LDH, LDB Series |
| DIMMING: PWM (100–1KHz), Remote ON/OFF | FORM FACTOR: Same pinout as LDD series |
| EFFICIENCY: Up to 96% | OPERATING TEMP: -40 to +50°C |
| PROTECTION: Short Circuit / Over Temperature | APPLICATIONS: DC lighting, track & landscape lighting |
| COMPLIANCE: EN61347, EN55015, EAC Certified | WARRANTY: 3 Years |
Description
The Mean Well NLDD-H Series is a new line of DC-DC constant current step-down LED drivers designed to replace the popular LDD, LDH, and LDB driver series. With outputs ranging from 350mA to 1400mA, the NLDD-H covers the most in-demand current ratings for compact, high-performance LED lighting systems.
Connection Style Variations
While Mean Well has consolidated its product range by eliminating less popular variants and surface-mount formats, the NLDD-H maintains full compatibility with the pinout of the older LDD series, making it a direct drop-in replacement in most applications.
Performance
These drivers offer wide input voltage support (10–56VDC), PWM dimming capabilities (100–1000Hz), and high efficiency up to 96%, making them ideal for portable lighting, DC bus lighting, 48V track lighting, and more. The minimum output voltage has been increased to 6V, which requires at least 2 LEDs in series, improving thermal performance and driver robustness.
Built in a compact and fully encapsulated case with UL94-V0 flame retardant epoxy, the NLDD-H offers short circuit and over-temperature protection, 3-year warranty coverage, and full certification to global lighting standards.
Technical Documentation
LDD-L Series Specifications
| Model | Input (VDC) |
Output | Dimming | Dimensions (mm) |
Connection Type |
||
|---|---|---|---|---|---|---|---|
| Volt. Range (VDC) |
Current (mA) |
Temp. (°C) |
|||||
| NLDD-350H NLDD-350HW |
10~56VDC | 2~32VDC | 350mA | -40 ~ +85°C | PWM & ON/OFF Control | 22.6(L) x 9.9(W) x 8.9(H) | L=Pin Style LW=Wire Style |
| NLDD-500H NLDD-500HW |
10~56VDC | 2~32VDC | 500mA | -40 ~ +85°C | PWM & ON/OFF Control | 22.6(L) x 9.9(W) x 8.9(H) | L=Pin Style LW=Wire Style |
| NLDD-700H NLDD-700HW |
10~56VDC | 2~32VDC | 700mA | -40 ~ +85°C | PWM & ON/OFF Control | 22.6(L) x 9.9(W) x 8.9(H) | L=Pin Style LW=Wire Style |
| NLDD-1050H NLDD-1050HW |
10~56VDC | 2~30VDC | 1050mA | -40 ~ +71°C | PWM & ON/OFF Control | 31.8(L) x 20.3(W) x 12.2(H) | L=Pin Style LW=Wire Style |
| NLDD-1200H NLDD-1200HW |
10~56VDC | 2~30VDC | 1200mA | -40 ~ +71°C | PWM & ON/OFF Control | 31.8(L) x 20.3(W) x 12.2(H) | L=Pin Style LW=Wire Style |
| NLDD-1400H LDD-1400HW |
10~56VDC | 2~30VDC | 1500mA | -40 ~ +71°C | PWM & ON/OFF Control | 31.8(L) x 20.3(W) x 12.2(H) | L=Pin Style LW=Wire Style |
Misc. Characteristics
Characteristics
LDD-L Series
CURRENT ACCURACY
±5% at 24VDC input
SWITCHING FREQUENCY
300L~700L: 40KHz~1000KHz, 1000L~1500L: 1000KHz
EXTERNAL CAPACITANCE LOAD (max.)
2.2uF
INPUT FILTER
Capacitor
PWM DIMMING FREQUENCY
300L~700L: 100~1KHz, 1000L~1500L: 100~500KHz
QUIESCENT INPUT CURRENT SHUTDOWN
1mA at PWM dimming OFF and 24VDC input
SHORT CIRCUIT
Regulated at output current, can be continued, auto-recovery
OVER TEMPERATURE
300~700: Shut down, auto-recovery
WORKING TEMP.
300~700: -40 ~ 85°C, 1000L~1500L: -40 ~ 71°C(Refer to "Derating Curve")
STORAGE TEMP., HUMIDITY
-40 ~ +85°C, 10 ~ 95% RH
TEMP. COEFFICIENT
±0.3%/°C
VIBRATION
10~500Hz, 2G 10min./1cycle, period for 60min. each along X,Y,Z axes
EMC EMISSION
Compliance to EN55015, FCC part 15 class B
EMC IMMUNITY
Compliance to EN61000-4-2,3,4,6,8; light industry level, criteria A
MTBF
2000Khrs min. MIL-HDBK-217F (25°C)
Full Documentation
NLDD
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Orders received before 3PM EST will be safely packaged and quickly shipped the same business day. If your order is NOT shipped the same business day, LEDSupply will offer a 5% discount off your next order.
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See respective ZONE maps below for SPECIFIC delivery time to your location:
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Shipping
LEDSupply does NOT profit from the shipping or handling of your order!
Orders received before 3PM EST will be safely packaged and quickly shipped the same business day. If your order is NOT shipped the same business day, LEDSupply will offer a 5% discount off your next order.
All orders SHIP FROM:
296 Beanville Road
Randolph, Vermont 05060
See respective ZONE maps below for SPECIFIC delivery time to your location:
Any order that does not qualify for free shipping, will by default include a discount of equal value to the free shipping offer.
The shipping offered is meant to provide the widest variety of shipping options at the lowest price:
USPS Priority Delivery Zone Map:
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