The LX1697 is a high performance CCFL controller optimized for wide input voltage range notebook display back lighting applications. Its brightness control architecture supports Intel's DPST (Display Power Saving Technology) that adjusts the brightness as a function of video content. Digital Dimming duty cycle is controlled by providing either a dc voltage or a digital PWM signal to the BRITE_D pin. Burst frequency can be controlled either by the on chip burst oscillator or directly by a low frequency PWM logic signal at BRITE_D.