The LT3743 is a synchronous step-down DC/DC converter designed to deliver constant current to drive high current LEDs. It can deliver up to 20A of continuous LED current or up to 40A of pulsed LED current, making it ideal for applications ranging from DLP projectors, laser drivers, and architectural lighting. The LT3743’s 5.5V to 36V input voltage range makes it ideal for a wide variety of applications, including industrial, DLP projection, and architectural lighting. The LT3743 provides up to 20A of continuous LED current from a nominal 12V input, delivering in excess of 80 watts of power. In pulsed LED applications, it can deliver up to 40A of LED current or 160 watts of peak power from a 12V input. Efficiencies as high as 95% eliminate any need for external heat sinking and significantly simplify the thermal design. A frequency adjust pin enables the user to program the frequency between 100kHz and 1MHz so designers can optimize efficiency while minimizing external component size. Combined with a 4mm x 5mm QFN or thermally-enhanced TSSOP-28 package, the LT3743 offers a very compact high-power LED driver solution.