Mean Well NLDD-1400H dimmable driver

Product details

Mean Well NLDD-1400H dimmable driver is a DC-to-DC constant-current LED driver intended for powering LED strings made up of multiple 3V-class LEDs. In practice, it’s used to convert your incoming DC power supply into a controlled current output suitable for compatible LED setups, with an integrated dimming input for PWM-style control. The driver’s output voltage is kept lower than the input, which helps it regulate the LED string operating conditions more consistently than a simple resistor approach.

Features:

• Designed as a DC-to-DC constant-current driver for driving multiple 3V LEDs in a string
• Output voltage tracks below the input voltage (about 2–3V lower), supporting stable operation with suitable LED sets
• Requires a DC power supply (unlike HLG or LPC-style drivers)
• Supports PWM dimming, with dimming down to 1% using a PWM controller
• Includes pins intended to make installation easier on the LDD-H-4S board

Specifications:

• Input requirement: Requires a DC power supply
• LED compatibility (by count): For approximately 2–14 x 3V LEDs, depending on your power supply and LEDs
• Output vs. input voltage: Output voltage is always about 2–3V less than the input voltage
• Dimming method: PWM controller
• Minimum dimming level: Capable of dimming down to 1%
• Board integration: Comes with pins for easier installation on the LDD-H-4S board