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Solutions Power Management Switching Regulator Step-Down (Buck) Regulators Multiple Output Buck
Solutions Power Management Switching Regulator Step-Down (Buck) Regulators Micropower Buck Regulators
Solutions Power Management Switching Regulator Step-Down (Buck) Regulators Internal Power Switch Buck
Solutions DC Regulator Solutions DC-DC Voltage Regulation Step Down DC-DC Solutions (Vin > Vout)

DC2003A - LTC3622 Demo Board (DFN) | Dual Sync Buck, 2.7V ≤ VIN ≤ 17V, Vout1 = 1.2V/1.8V/2.5V/3.3V @ 1A, Vout2 = 1.5V/1.8V/3.3V/5V @ 1A

Demonstration circuit 2003A is a synchronous step-down regulator using the power-saving LTC3622EDE monolithic buck regulator in a compact 14-pin DFN (4mm × 3mm) package. The DC2003A operates from an input voltage range of 2.7V to 17V and provides dual 1A outputs with an adjustable output voltage range from 1.2V to 5V. The LTC3622 IC quiescent current can be as low as 5μA in Burst Mode® operation with both channels enabled and less than 0.1μA in shutdown mode. The switching frequency is fixed to 1MHz or 2.25MHz with a ±50% synchronization range to an external clock. A user-selectable mode input is provided to allow the user to trade off ripple noise for light load efficiency.

DC2003A - Schematic

 


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
  • 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.

LTpowerCAD

The LTpowerCAD design tool is a complete power supply design tool program that can significantly ease the tasks of power supply design. It guides users to a solution, selects power stage components, provides detailed power efficiency, shows quick loop bode plot stability and load transient analysis, and can export a final design to LTspice for simulation. Click here to download LTpowerCAD

To open the project file for this circuit:

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

View More Step Down DC-DC Solutions (Vin > Vout) Solutions

LT8610A Demo Board | Micropower Sync Buck, 5.5V ≤ VIN ≤ 42V Input, Vout = 5V @ 3.5A
LTC3774EUHE Demo Board | Sync Buck Controller, 4-Phase (LTC3774 x2), 10V ≤ VIN ≤ 14V, Vout = 1.2V @ 120A

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