The LM3404HV is TI's non-synchronous buck regulator with an input range of up to 75V for high brightness, high-power LEDs. This part extends the current range from the LM3402 from 0.5A to 1A. The LM3404 and LM3404HV's wide input voltages are also excellent for driving LEDs and constant current sources for 12V, 24V and 48V systems.