The NCP5010 is a fixed frequency PWM boost converter with integrated rectification optimized for constant current applications such as driving white LEDs. This device features small size, minimal external components and high-efficiency for use in portable applications and is capable of providing up to 500 mW output power to 2-5 series connected white LEDs. A single resistor sets the LED current and the CTRL pin can be pulse width modulated (PWM) to reduce the LED Current.