The MP3304 is a monolithic step-up converter designed for driving arrays of WLEDs from 5V input or a single cell Lithium Ion battery. The MP3304 uses current mode, fixed frequency architecture to regulate the LED current, which is measured through an external current sense resistor. Its low 200mV feedback voltage reduces power loss and improves efficiency. The MP3304 features up to 50kHz true PWM dimming, which allows the flexible control of the backlighting luminance under wide range of the ambient brightness, and also avoids the possibility of PWM dimming audible noise. The MP3304 is turned off if an over-voltage condition is present due to an open circuit condition. MP3304 also includes under-voltage lockout, current limiting and thermal overload protection preventing damage in the event of an output overload. The MP3304 is available in small 8-pin QFN 2x3mm package.Internal Power MOSFET Drives up to 10 Series White LEDs Up to 88% Efficiency PWM Dimming Frequency from 250Hz to 50kHz 2.2MHz Fixed Switching Frequency Open Load Shutdown Low 200mV Feedback Voltage UVLO, Thermal Shutdown Internal 1.3A Current Limit Available in 2x3mm QFN8 Package