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DC841A - LT3477EFE | Constant Current Boost LED Driver, 2.7V ≤ VIN ≤ 16V, VLED up to 36V @ 330mA

Demonstration circuit 841 is a constant current LED boost converter with input current and output voltage protection featuring the LT®3477. The board is optimized to drive 330mA LED arrays with a total LED voltage between the maximum input voltage and 36V. The input voltage range is 2.7V to 16V. 

DC841 has overvoltage protection below 36V if the LEDs are open or not properly attached to the terminals on the PCB

DC841A - Schematic




LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.