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Mean Well LDH-45B-350 DC/DC LED Driver CC 350mA - 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 Rating44.1 Watt
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Output Voltage126 Volt
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Rated Current0.35 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
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Payment & Security
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Frequently Asked Questions
Can I use the LDH-45B-350 for a 350mA LED downlight?
Yes, if the downlight is designed for constant current operation at 350mA and its total LED forward voltage stays within the 21-126V CC range. This is a constant current driver and should not be used in place of a constant voltage supply. The driver is rated for 44.1W.
Is this driver appropriate for signage modules that run at 350mA?
It can be appropriate for signage modules that require 350mA constant current and whose combined forward voltage is within 21-126V. The wide CC range makes it suitable for longer or higher-voltage constant current LED strings. It is not intended for constant voltage signage products.
Can the LDH-45B-350 run a small LED array with a higher total forward voltage?
Yes, this step-up constant current driver provides 350mA across a 21-126V CC range, which suits higher-voltage LED arrays within that window. The 44.1W rating should also match the array requirement. The exact LED count depends on the forward voltage of each LED.
Is this model suitable for exposed or demanding environments?
The IP67 waterproof rating supports use in environments where protection against dust and water is required. It is also specified for operation from -40°C to +70°C. That makes it a practical option for fixtures facing wide temperature swings and outdoor exposure.
How do I confirm compatibility with my LED string?
Your LED load must be rated for 350mA constant current, and the total forward voltage must stay within the 21-126V CC output range. The number of LEDs depends on each LED's forward voltage rather than a fixed count. A constant voltage LED load is not compatible with this driver.
How does the LDH-45B-350 compare with the other 350mA LDH options in this family?
At 350mA, the LDH-25-350 and LDH-25-350W are 25.2W with a 12-72V CC range, the LDH-45A-350 variants are 30.1W with a 12-86V or 24-86V CC range, and the LDH-45B-350 variants are 44.1W with a 21-126V or 36-126V CC range. Within the 45B group, the LDH-45B-350 and LDH-45B-350W use 21-126V, while the LDH-45B-350DA and LDH-45B-350WDA use 36-126V. The W versions are wire style, and the non-W versions are pin style.
