MEAN WELL LDD-700LW 700mA Step-Down LED Driver DC/DC Converter with PWM/Analog Dimming

With an efficiency of up to 97%, the MEAN WELL LDD-700LW transforms a wide 9–56 VDC input into a precise 700 mA constant current, driving LED strings from 2 to 52 VDC with minimal energy loss. This non-isolated buck converter is engineered for high-reliability lighting applications where space and thermal performance matter.

Overview

The LDD-700LW is a DC/DC step-down LED driver that delivers a stable 700 mA output current over an output voltage range of 2–52 VDC. It accepts a wide input voltage from 9 to 56 VDC, making it suitable for 12V, 24V, and 48V DC systems. The driver supports both PWM dimming (100 Hz–3 kHz) and analog dimming (0.1–6 V), allowing flexible brightness control. Its compact wire-lead design enables easy integration into luminaires, signage, and other LED fixtures.

What stands out

• Ultra-high efficiency up to 97% reduces heat and energy consumption.
• Wide input voltage range (9–56 VDC) for versatile DC bus compatibility.
• Dual dimming modes: PWM (100 Hz–3 kHz) and analog (0.1–6 V).
• Non-isolated buck topology with a switching frequency of 200 kHz for compact magnetics.
• Built-in protections: short circuit and over temperature.
• Operating temperature from -40°C to +70°C for harsh environments.
• Low ripple current for flicker-free lighting.
• Certified to UL/cUL, CE, and FCC standards.

Technical details

• Input voltage: 9–56 VDC
• Output current: 700 mA ±3%
• Output voltage: 2–52 VDC
• Efficiency: up to 97%
• Dimming: PWM (100 Hz–3 kHz) or analog (0.1–6 V)
• Switching frequency: 200 kHz
• No-load power consumption: <0.5 W
• MTBF: >1,800,000 hours
• Protections: short circuit, over temperature
• Operating temperature: -40°C to +70°C
• Mounting: wire leads
• Certifications: UL/cUL, CE, FCC

Our verdict

The LDD-700LW is a high-performance, compact solution for constant-current LED driving in DC-powered applications. Its exceptional efficiency, wide input range, and dual dimming capability make it a top choice for professional lighting designers and OEMs.