MAX8709B Datasheet - Maxim Integrated Products

MAX8709B High-Efficiency CCFL Backlight Controller

The MAX8709B integrated backlight controller is optimized to drive cold-cathode fluorescent lamps (CCFLs) using a resonant full-bridge inverter architecture. The resonant operation maximizes striking capability and provides near-sinusoidal waveforms over the entire input range to improve CCFL lifet.

MAX8709B Features

* that effectively protect against many single-pointfault conditions including lamp-out and short-circuit faults. The MAX8709B achieves 10:1 dimming range by “chop- ping” the lamp current on and off using a digital pulse- width-modulation (DPWM) method. The minimum DPWM duty cycle of the MAX8709B

MAX8709B_MaximIntegratedProducts.pdf