Linear Technology Announces the LT3743, a Synchronous Step-Down DC/DC Converter for Constant Current to Drive High Current LEDs

By pur, Monday, October 26th, 2009
Category: IC, Chip, SoC, Light, Optics

The LT3743 is a synchronous step-down DC/DC converter designed to deliver constant current to drive high current LEDs. The device’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. Combined with a 4mm x 5mm QFN or thermally enhanced TSSOP-28 package, the LT3743 offers a very compact high-power LED driver solution. The LT3743 offers both PWM and CTRL_SELECT dimming, offering 3,000:1 dimming capability at three LED current levels, making it ideal for color mixing applications such as those required in DLP projectors. The LT3743EUFD is available in a 28-pin 4mm x 5mm QFN package, whereas the LT3743EFE is available in a thermally enhanced TSSOP-28…

LT3743-Typical-Application

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LT3743 - UFD Package

LT3743 - FE Package

LT3743
(Pictures: Linear)


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