Description
The SD3390B is a PWM high-efficiency LED driver control IC. It allows efficient operation of high-brightness (HB) LEDs from voltage sources ranging from 10VDC up to 600VDC. The SD3390B controls an external MOSFET at fixed switching frequencies up to 300 kHz .
The frequency can be programmed using a single resistor. The LED string is driven at a constant current rather than a constant voltage, thus providing a constant light output and an enhanced reliability. The output current can be programmed between a few milliamps and up to more than 1.0A. 

FEATUREs
✦ >90% efficiency
✦ 10V to 600V input range
✦ Constant-current LED driver
✦ Applications from a few mA to more than 1A
   output
✦ LED string from one to hundreds of diodes
✦ Linear and PWM dimming capability
✦ Input voltage surge ratings up to 600V
✦ Over Temperature Protection

APPLICATIONs
✦ DC/DC or AC/DC LED driver applications
✦ RGB backlighting LED driver
✦ Backlighting of flat panel displays
✦ General-purpose constant current source
✦ Signage and decorative LED lighting
✦ Automotive
✦ Chargers