DC621A - LT1941EFE Demo Board | 4.7V ≤ VIN ≤ 14V, Vout1 = 1.8V @ 2.4A, Vout2 = 3.3V @ 1.4A, Vout3 = -12V @ Up to 550mA

Demonstration circuit 621 is a 1.25MHz triple DC/DC switching converter using the LT1941. The LT1941 has two step-down converters and a third boost/inverting converter that can also be configured as a SEPIC or Cuk (inverting). The LT1941 has a wide 3.5V to 25V input voltage range; the demo board limits this range from 4.7V to 14V and is configured to provide 1.8V@2.4A, 3.3V@1.4A and -12V@ up to 550mA (depending on VIN).

Software

LTspice

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
- LT1941 Demo Circuit - Triple Monolithic Switching Regulator (4.7-14V to 1.8V @ 2.4A, 3.3V @ 1.4A & -12V @ 550mA)
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.