Three channel version of the LPLDD-5A-12V driver. Changed capacitors allow this driver to work with compliance voltage levels up to 16 volts. Each channel is driven by independent 0-5V voltage range analog input. Additional connector is added to make the connection more comfortable. Properly matched parts ensures low noise while used with lower currents in range of 0 - 1A.

Reference: 001516

EAN13: 5902693110910


Available quantity: 6 Items

    $99.00 tax excl.

    Product Description

    This is a low current version of a 3 channel RGB lite LPLDD laser diode driver. The maximum output current is 1A per channel. It was designed for lower power laser diodes in order to assure smooth waveforms, fast rising/falling time and low ripple.

    This is a professional three-channel driver for laser diodes (e.g.: RGB laser systems) with a built-in softstart feature. The current of channel can be independently controlled via the analog input of 0 - 5V with a modulation bandwidth of up to 100kHz. Each channel has a potentiometer that can be used to set the maximum current.

    Each of the controls are labeled on the PCB to make it more intuitive and easier to set.

    Proper connector is attached to the driver for your use.

    This driver is provided without a heatsink to allow customers to use their own heatsink.  It also reduces the price for those customers who wish to operate it at a low current where a heat sink is not required. It is a fully functioning component ready to be mounted in laser devices.


    Labels on the board showing "R" "G" "B" channels are only the suggestion how to connect the diodes. It is possible to use any channel to any laser diode.

    The minimum diode input voltage should be higher or equal to 7V, in other situations it is given by the formula:

    Vin = 0,3* I + Vd

    Vin - input voltage

    Vd - diode working voltage

    I - desired maximum current

    All channels are powered by one common input.

    Modulation inputs can be used as TTL inputs with its logic levels of 0V and 5V or as an analog input. Analog modulation means that by using 2,5 V on ANG input you get 50% output power, analogically by using 4 V you get 80% output power, etc.

    Depending on used laser diode and PSU, you should monitor and assure proper cooling for MOSFETs.

    Note that the MOSFETS must be isolated from the heatsink/plate with silicon pad as well as plastic sleeve. Short circuit between MOSFET and heatsink/plate can damage the driver and can be dangerous for the Laser Diode.

    We recommend the use of power cables with cross-section of at least 0.1 mm2.



    The analog input is protected by a 5V1 Zener diode on occasion there appears the voltage higher than 5V. While this additional protection is offered, the user is still advised not to exceed 5V on each analog input. 


    The power supply input is protected against a too high input voltage by a transil diode.


    The driver is fitted with a softstart designed to protect laser diodes against switch-on transient effects.

    The output of each channel of the driver is protected by a shottky diode that prevents a reverse voltage.

    Technical Data

    Dimensions55 x 23,5 mm
    Input Voltage7 - 16 V
    Max. Current per Channel1 A
    Max. Modulation Frequency100 kHz
    Max. Power Dissipation15W
    Modulation Input Voltage Range0 - 5 V
    Number Of Channels3
    Pre-Set Current Setting500 mA
    Softstart Time2000 ms
    Transistor Type UsedN-MOSFET
    Rise Timeless than 1.5µs
    Fall Timeless than 1.5µs
    Noise and Ripple (RMS)4.2 mA