Linear Technology introduces the fractional-charge pump high-current white LED driver LTC3215, which delivers up to 700mA of LED current. By monitoring the voltage across the LED current source, its high-efficiency multi-mode architecture automatically switches between 1x, 1.5x, or 2x boost modes and switches mode only when ILED dropout is detected, allowing the LTC3215 to switch between Maximize efficiency throughout the entire lithium-ion battery operating voltage range (up to 92%). The 900kHz switching frequency and very few external components (two jumper capacitors, two programming resistors and two bypass capacitors between VIN and CPO) make the LTC3215 a small footprint and economical solution , Ideal for video and flash applications in camera phones and other portable lighting products. The LTC3215 features a built-in soft-start circuit that prevents inrush currents during startup. When the input voltage approaches the LED forward voltage, the ultra-low dropout current source maintains accurate LED current. The LTC3215 is available in a flat (0.75mm) 3mm x 3mm 10-lead DFN package. The LTC3215EDD in DFN-10 package is available from stock. In 1,000-unit quantities, each starting at 1.75 US dollars.