Over these years, MEAN WELL has released DC/DC constant current LED drivers, such as LDD-L (step-down mode and low input voltage), LDD-H (step-down mode and high input voltage), and LDB-L (buck-boost mode and low input voltage), which have been widely adopted. To fully satisfy the increasing LED market demands of DALI intelligent control application, MEAN WELL is thrilled to unveil new DC/DC LED driver series with DALI dimming function, LDD-H-DA.

LDD-H-DA series is a constant current step-down converter with 6~50VDC high input voltage and 3~45VDC output voltage. Its output current range covers 350~1400mA with DALI dimming function, which completely meets the needs of DALI intelligent control in lighting fixture system. Both pin style (LDD-H-DA) and wire style (LDD-H-WDA) are thoroughly potted, reaching IP65 waterproof and dustproof. In addition, pin-style LDD-H-DA model has built-in PWM and analog dimming function, remotely controlling power ON/OFF, and PWM function is able to further adjust output current.

LDD-H-DA can be deployed to the DC output side of constant voltage AC/DC LED driver, providing constant current to drive LED luminaries to stabilize current and extend fixtures lifespan. This product is utterly suitable for indoor and outdoor LED lighting system, such as street lighting, landscape lighting, tunnel lighting, household lighting, office lighting, and so on…



。Constant current step-down mode (350~1400mA)

。Wide input (6~50VDC) and output (3~45VDC) range

。High working efficiency up to 95%

。Comply with EMI without any additional components (EN55015)

。DALI dimming function

。Built-in PWM dimming and remote ON/OFF control functions (pin style)

。Fully encapsulated with IP65 level

。Protections：Short circuit

。Dimension (L x W x H)：40.6 x 23.5 x 10.1 mm

。3 years warranty











LDD-H-DA Series

Source：http://www.meanwell.com/