60 V Synchronous Buck LED Driver Delivers 300 W

The LT3763, a synchronous buck LED driver controller from Linear Technology, delivers over 300 W of LED power, while a 6 V to 60 V input voltage range suits it for use in a variety of applications, including automotive, industrial and architectural lighting. Its output voltage can be set from 0 V to 55 V, enabling it to drive a range of LEDs in a single string. Offering both input and output current monitors and limiting, the controller also employs accurate output voltage regulation as well as input regulation, useful for high impedance sources such as solar panels. Its constant current and constant voltage regulation makes it useful in applications ranging from driving high brightness LEDs to battery and supercap charging. LED current accuracy of ±6% ensures constant lighting while ±1.5% output voltage accuracy offers several LED protection features and also enables the converter to operate as a constant voltage/constant current source for charging applications. The LT3763EFE is available in a 28-lead thermally enhanced TSSOP package and is priced starting at $4.45 each/1,000.