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DC1612A-A - LT3519EMS-1 Demo Board | SEPIC LED Driver, 1MHz fSW, 6V ≤ VIN ≤ 24V, VLED = 16V @ 150mA

Demonstration Circuit 1612A is a fully integrated LED driver with 750mA switch current featuring the LT®3519-1 (1MHz switching) and the LT3519-2 (2.2MHz switching). The multitopology LT3519 operates with an input voltage up to 30V (40V transients) but the demo board has open LED protection set at 18V. The board is optimized to drive an LED string of up to 16V at 150mA in a SEPIC topology. The demo board operates from a 6V to 24V input voltage range

LT3519 features in a low-side integrated 45V 750mA power switch, integrated catch diode, integrated compensation,  3000:1 PWM dimming ratio, overvoltage protection, shutdown control pin and analog LED current dimming control

DC1612A-A - 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.