Low-Cost, SMBus, CCFL Backlight Controller

The MAX8759 integrated cold-cathode fluorescent lamp (CCFL) inverter controller is designed to drive CCFLs using a full-bridge resonant inverter. The resonant operation ensures reliable striking and provides near-sinusoidal waveforms over the entire input range. The controller operates over a wide input-voltage range of 4.5V to 28V with high power to light efficiency. The device also includes safety features that effectively protect against single-point fault conditions such as lamp-out, secondary overvoltage, and secondary short-circuit faults.
The MAX8759 provides accurate lamp-current regulation (2.5%) for superior CCFL inverter performance. The lamp current is adjustable with an external resistor; 10:1 dimming range CAN be achieved by turning the CCFL on and off using a digital pulse-width modulation (DPWM) method, while maintaining the lamp-current constant. The MAX8759 provides three mechanisms for controlling bri 4cf ghtness: 2-wire SMBus"-compatible Interface external ambient-light Sensor (ALS), or system PWM control. The MAX8759 supports Intel Display power-saving technology (DPST) to maximize battery life. The device includes two lamp-current feedback input pins that support dual-lamp applications with a minimum number of external components.
The MAX8759 controls a full-bridge inverter for maximum efficiency and directly drives four external n-channel Power MOSFETs An internal 5.35V linear Regulator powers the MOSFET drivers and most of the internal circuitry. The MAX8759 is available in a space-saving, 28-pin, thin QFN package and operates over a -40C to +85C temperature range.
By Maxim Integrated Products
MAX8759 's PackagesMAX8759 's pdf datasheet

MAX8759 Pinout, Pinouts
MAX8759 pinout,Pin out
This is one package pinout of MAX8759,If you need more pinouts please download MAX8759's pdf datasheet.

MAX8759 Application circuits
MAX8759 circuits
This is one application circuit of MAX8759,If you need more circuits,please download MAX8759's pdf datasheet.

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