DC507A: Demo Board for the LT1937 White LED Step-Up Converter in SC70 and ThinSOT.

DC902A-B: Demo Board for the LTC3214 500mA Camera LED Charge Pump.

applications such as automotive TFT LCD backlights, courtesy lighting and heads-up displays. One of

Demonstration circuit 976 is a Quadruple High Power LED Driver in Buck Mode featuring the LT3476EUHF. The LT3476 is a quad output, multitopology DC/DC converter designed to operate as a current source for driving high current LEDs. Each of the four regulators on the demo circuit is independently operated. The VIN power supply for the IC ranges from 2.8V to 16V. The PVIN power supply for the buck regulators ranges up to 33V. On the demo circuit, the default current for each output channel is 350mA but it can be adjusted up to 1.05A via resistor dividers at the VADJ pins. The output current should not exceed the rated current of the LEDs used. If 1W LEDs, such as the Lumileds Luxeon LEDs, are used, 350mA current is the maximum. 1A output current is reserved for 3W LEDs, such as Luxeon III. The input voltage is limited by the CAP pin overvoltage protection threshold. As a result, each channel of the demo circuit can drive up to 27V total LED voltage.

DC805A: Demo Board for the LTC3216 1A Low Noise High Current LED Charge Pump with Independent Torch/Flash Current Control.

Automotive Displays LCD and CRT Compatible RGB Amplifiers Coaxial Cable Drivers Low Voltage High Speed Signal Processing Set Top Boxes

DC871A-A: Demo Board for the LTC3215 700mA Low Noise High Current LED Charge Pump.

soft start is implemented to reduce inrush current during startup. Applications LCD monitor and TV LED backlights Industrial lighting

(LFCSP).APPLICATIONS TFT LCD bias supplies Portable applications Industrial/instrumentation equipment

positive or negative voltage LCD contrast operation. The LT1183 permits unipolar contrast operation