The LT3476 from Analog Devices is a LED Driver IC with Input Voltage 2.8 to 16 V, Output Current 2000 mA, Number of Output 4, Switching Frequency 200 to 2000 KHz, Operating Temperature Range -40 to 125 Degree C. Tags: Surface Mount, DC-DC LED Driver. More details for LT3476 can be seen below.