The LT3952A from Analog Devices is a LED Driver IC with Input Voltage 3 to 42 V, Output Current 4000 mA, Number of Output 1, Switching Frequency 200 to 3000 KHz, Operating Temperature Range -40 to 125 Degree C. Tags: Surface Mount, Backlight LED Driver, Automotive LED Driver. More details for LT3952A can be seen below.