MEAN WELL LDD-500LW DC-DC Step-Down Constant Current LED Driver, 9-36V Input, 500mA, 2-32V Output, IP67, PWM/Analog Dimming

The LDD-500LW stands apart from typical LED drivers by combining a wide 9–36 VDC input with a constant 500 mA output in a compact, IP67-rated package. Unlike many drivers that require external heatsinking or bulky enclosures, this step-down converter delivers up to 96% efficiency while maintaining ±3% current accuracy across the full 2–32 VDC output range. Its non-isolated buck topology and through-hole pin mounting make it ideal for integration into LED luminaires, signage, and industrial lighting where space is at a premium.

Highlights

• Wide input voltage range: 9–36 VDC, suitable for 12V and 24V battery systems
• Constant current output: 500 mA with ±3% accuracy
• Output voltage range: 2–32 VDC, supporting 1–15 high-power LEDs in series
• High efficiency up to 96%, reducing heat and energy loss
• Dual dimming control: PWM and analog (1–10V) for flexible brightness adjustment
• IP67 ingress protection: dust-tight and protected against temporary immersion
• Operating temperature: -40°C to +71°C, reliable in harsh environments
• Protections: short circuit and over temperature
• Compact dimensions: 22.6 x 9.9 x 8.9 mm, through-hole mounting
• Compliant with UL/CUL, CE, and FCC standards

In daily use

This driver excels in applications where reliability and precise current control are critical. Connect it directly to a 12V or 24V DC power source, and it will maintain a steady 500 mA through your LED string, even as the input voltage fluctuates. The PWM input allows you to dim the LEDs from 0% to 100% using a microcontroller or external PWM signal, while the analog input accepts a 1–10V control voltage for smooth, flicker-free dimming. The IP67 rating means you can mount it in outdoor fixtures or damp locations without additional sealing, and the wide temperature range ensures consistent performance from freezing cold to intense heat.

Full specifications

• Brand: MEAN WELL
• Model: LDD-500LW
• MPN: LDD-500LW
• EAN: 4021087005128
• Type: DC-DC constant current LED driver (step-down)
• Input voltage: 9–36 VDC
• Output current: 500 mA
• Output voltage: 2–32 VDC
• Output power: up to 16 W (32 V × 0.5 A)
• Efficiency: up to 96%
• Dimming: PWM + analog (1–10V)
• Protections: short circuit, over temperature
• Operating temperature: -40°C to +71°C
• IP rating: IP67
• Mounting: through-hole pins
• Number of outputs: 1
• Constant current accuracy: ±3%
• Ripple & noise: < 150 mVp-p
• Isolation: non-isolated
• Compliance: UL/CUL, CE, FCC
• Dimensions (W x H x D): 22.6 x 9.9 x 8.9 mm

Final note

The MEAN WELL LDD-500LW is a rugged, high-efficiency driver that simplifies LED system design. Its combination of wide input range, precise current regulation, and dual dimming options makes it a versatile choice for both prototyping and production. Whether you're building architectural lighting, horticultural fixtures, or industrial indicators, this driver delivers consistent performance in a tiny footprint.