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Mean Well LDH-45B-500W DC/DC LED Driver CC 500mA - Step-up
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Mean Well LDH-45B-500W DC/DC LED Driver CC 500mA - Step-up
Description
Description
Features
| DC/DC step-up converter |
| Constant current output: 350ma to 1050mA |
| Wide output LED forward voltage up to 126VDC |
| High efficiency up to 95% |
| Built-in EMI filter, comply with BS EN/EN55015 without additional input filter and capacitors |
| PWM + analog dimming and remote ON/OFF control [(Blank) type or W type] |
| DALI dimming [(Black)DA type or WDA type |
| Protections: Short circuit/ Over voltage / Under voltage |
| Cooling by free air convection |
| Fully encapsulated |
| 3 years warranty |
General Specification
| Current accuracy | ±5% at 12VDC input |
| Over-voltage protection | up to 140% output voltage |
| Efficiency | 95.5% |
| Short circuit protection | Protection type: Power OFF and fuse open |
| Working temperature | -40 ~ +70℃ (Refer to "Derating Curve") |
| EMC | Compliance to EN55015, EN61000-4-2,3,4,6,8, EAC TP TC 020 |
| Temp. Coefficient | ±0.03%/℃ (0 ~ 50℃) |
| Dimension (LxWxH) (mm) | 75 x 53 x 22.7mm |
| Packing | 138g;100pcs/14.8Kg/0.83CUFT[(Blank) type or (Blank) DA type],1.04CUFT(W type or WDA type) |
Specifications
Specifications
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BrandMean Well
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SeriesLDH Series
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Power Rating43 Watt
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Output Voltage86 Volt
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Rated Current0.5 Ampere
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Input Voltage18V~32V
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No of Output1
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Dimming ControlPWM
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Standards MetCE,EAC
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Operation ModeConstant Current
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Operating Temperature-40°C~70°C
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Warranty3 Year
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Length2.95 in
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Width2.09 in
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Height0.89 in
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Weight0.04 lb
File Downloads
File Downloads
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Payment & Security
Payment methods
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Frequently Asked Questions
Can I use the LDH-45B-500W for a 500mA LED downlight string?
Yes, this driver is built for constant current LED loads at 500mA, which is the typical requirement for many LED downlight assemblies. It operates across a 21-86V constant current output range with up to 43W, so it is suited to downlight strings whose total forward voltage falls inside that range. It is not a constant voltage driver.
Is the LDH-45B-500W suitable for signage LED modules?
It can be suitable for signage modules when the modules are designed to run from a 500mA constant current source rather than a constant voltage supply. The driver provides 500mA constant current over 21-86V and up to 43W, which fits higher-voltage constant current module strings. It should not be used in place of a constant voltage LED power supply for signage products that expect fixed-voltage input.
Can this driver run a small LED array in a sealed outdoor enclosure?
Yes, the IP67 waterproof rating supports use in sealed indoor or outdoor lighting assemblies where moisture and dust protection matter. Its operating temperature range is -40°C to +70°C, which helps in demanding ambient conditions. The LED array still needs to be a 500mA constant current load within the 21-86V range.
How do I know if my LEDs are compatible with the LDH-45B-500W?
Compatibility is based on current and total forward voltage, not a fixed LED quantity. This model supplies 500mA constant current with a 21-86V output range, and the number of LEDs depends on each LED's forward voltage. If your load expects constant voltage instead of constant current, this is not the right type of driver.
How does the LDH-45B-500W compare with other LDH step-up models?
Within the sibling range, the closest 500mA versions are LDH-45B-500 at 500mA, 21-86V, 43W; LDH-45B-500DA at 500mA, 36-86V, 43W; and LDH-45B-500WDA at 500mA, 36-86V, 43W. Other LDH-45B step-up siblings include 350mA models at 21-126V and 44.1W or 36-126V and 44.1W, 700mA models at 21-64V and 44.8W or 36-64V and 44.8W, and 1050mA models at 21-43V and 45.15W or 36-43V and 45.15W.
