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DC1124A - LT3591EDDB Demo Board | Boost LED Driver, 3V ≤ VIN ≤ 9V, VOUT = 40V @ 20mA

Demonstration circuit 1124 is an LED Driver with Integrated Schottky featuring the LT3591. The LT3591 is a fixed frequency step-up current mode DC/DC converter that drives up to ten white LEDs in series at 20mA. The input voltage range of the demo board is from 3V to 9V. 42V (typical) LED open circuit protection is provided.

The high side current sensing feature of the LT3591 allows “one wire” current source, i.e. the low side of the LED string can return to ground anywhere. 

DC1124A - 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.