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Mean Well LDH-45A-500 DC/DC LED Driver CC 500mA - Step-up
The LDH-45A is a Mean Well power converter (input range: 9~18VDC).
Key Features
- ✓ Input voltage range: 9~18VDC
- ✓ Protections: Short circuit / Over voltage
- ✓ Remote ON/OFF control
- ✓ 3 years warranty
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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 Voltage9V~18V
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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
::specification::
Frequently Asked Questions
Can I use the LDH-45A-500 for 500mA LED downlights?
Yes, if the downlight is designed for constant current operation at 500mA and the total LED forward voltage stays within 12-86V. This model can deliver up to 43W, so it is suited to higher-power constant current downlight loads within that range. It is not meant for fixed-voltage LED products.
Is the LDH-45A-500 suitable for signage modules or compact LED arrays that need 500mA?
It can be used for constant current signage modules or small LED arrays that require 500mA and fall within the 12-86V constant current range. The 43W rating gives more headroom than the 350mA version for higher-power constant current loads. Its IP67 rating also supports use in wet or dusty environments.
Can this driver support a longer constant current LED string than a lower-voltage CC driver?
Yes, this step-up driver supports constant current operation across 12-86V with up to 86V output voltage. That allows it to work with LED strings that need a wider voltage range while maintaining 500mA output. The total load still needs to stay within 43W.
How do I size an LED string for the LDH-45A-500?
Match the LED load to constant current operation at 500mA, then check that the total LED forward voltage falls within the 12-86V constant current range. The number of LEDs depends on each LED's forward voltage, so there is no fixed LED count for this driver. The load must also stay within the 43W rating.
What is the difference between the LDH-45A-500 variants in this family?
Within the 500mA versions, LDH-45A-500 and LDH-45A-500W are rated 12-86V and 43W, while LDH-45A-500DA and LDH-45A-500WDA are rated 24-86V and 43W. The non-W models are pin style and the W models are wire style. All four are constant current 500mA step-up drivers.
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