DESCRIPTION
The LX1686 Backlight Controller IC provides all the control functions needed to implement Linfinity’s direct drive inverters used to operate cold cathode fluorescent lamps (CCFL’s). This IC can be used to control single or multiple-lamp configurations. CCFL’s are used for back or edge lighting of liquid crystal flat panel displays (LCD’s) and typically find application in notebook computers, web browsers, automotive and industrial instrumentation, and entertainment systems.

KEY FEATURES
■ RangeMAXTM Wide Range Dimming (>100:1)
■ Synchronizable To Display Video Frequency
■ High Voltage Feedback Loop Directly Controls Maximum Open Lamp And Minimum Strike Voltages
■ Transformer Protected From Over-Heating During Lamp Striking
■ Micro-Amp Sleep Mode
■ User-Programmable Fixed Frequency Operation
■ Under-Voltage Lockout Feature With PowerUp Reset
■ Built-In Soft-Start Feature
■ Operates With 3.3V or 5V Power Supplies
■ 100mA Output Drive Capability

APPLICATIONS
■ Notebooks
■ Instrumentation Displays
■ Desktop Computer Monitors
■ Low Ambient Light Displays (used in Aircraft, Automobiles, and Hand-held Equipment)