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Mean Well LDH-45B-1050DA DC/DC LED Driver CC 1050mA - Step-up
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Mean Well LDH-45B-1050DA DC/DC LED Driver CC 1050mA - Step-up
Description
Description
The LDH-45B 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
Specifications
Specifications
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BrandMean Well
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SeriesLDH Series
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Power Rating45.15 Watt
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Output Voltage43 Volt
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Rated Current1.05 Ampere
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Input Voltage18V~32V
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No of Output1
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Dimming ControlDALI
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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-1050DA for a 1050mA LED downlight with a higher forward-voltage string?
Yes, if the downlight is designed for constant current operation at 1050mA and its total forward voltage stays within the 36-43V CC range. This narrower range makes it better suited to higher-voltage LED loads than a wider-range model. It is not intended for constant voltage LED products.
Will this work for signage modules that need 1050mA constant current?
It can, provided the signage module is specified for 1050mA constant current input and operates within the 36-43V constant current range. This driver is rated at 45.15W and should be matched to a load within that output window. It should not be used where the LED module expects constant voltage power.
Is the LDH-45B-1050DA suitable for a small LED array with a tight voltage requirement?
Yes, this model is intended for constant current LED arrays at 1050mA where the total forward voltage falls between 36V and 43V. Because the CC range starts at 36V, it fits higher-voltage arrays better than lower-voltage strings. The number of LEDs depends on each LED's forward voltage.
Can I use this driver in outdoor enclosures or harsh temperature conditions?
The IP67 waterproof rating supports use in environments where protection from water and dust is needed. Its operating temperature range is -40°C to +70°C, so it is suited to both cold and hot conditions within that span. The rest of the lighting system still has to meet the same environmental standard.
How do I check LED compatibility for the LDH-45B-1050DA?
Your LED load needs to be a constant current load rated for 1050mA, and the driver's CC output range is 36-43V. The LED quantity depends on the forward voltage of each LED, so there is no fixed LED count. If the load is a constant voltage product, this driver is not compatible.
How is the LDH-45B-1050DA different from the other 1050mA LDH-45B models?
The LDH-45B-1050DA and LDH-45B-1050WDA are 45.15W, 1050mA models with a 36-43V CC range, while the LDH-45B-1050 and LDH-45B-1050W use a wider 21-43V CC range. The DA versions are better matched to higher-voltage LED loads because their constant current window starts at 36V. The non-W version is pin style, and the WDA version is wire style.
