DESCRIPTION

Microsemi’s LX1691 is a cost reduced, enhanced feature set, Direct Drive CCFL (Cold Cathode Fluorescent Lamp) Controller. Its architecture is based on the very popular LX1689. By limiting VDDP to 5.5V and using advanced processing, die size and package pin count is decreased while improving dimming precision.

LX1691 based inverter modules can be designed for virtually any CCFL appliance from digital cameras and PDA’s to big screen monitors and driver viewable automotive displays.

KEY FEATURES

◾ Simultaneous Amplitude And Duty Cycle Dimming Modes

◾ Resistor Programmable Min and Max Lamp Currents

◾ Digital Dimming Can Synch To External Or Internal Clocks

◾ 100 ms Power On Delay

◾ Open Or Shorted Lamp Regulation & Shutdown

◾ “On Chip” Full Wave Lamp Current & Voltage Rectifiers

◾ 16 Pin TSSOP Package

◾ Very Stable Oscillator with OnChip Timing Capacitor

◾ Soft Start-Up Striking

◾ Enhanced Digital Dimming Resolution

BENEFITS

◾ Low Component Count / Module Cost / And Size

◾ High “Nits/Watt” Efficiency

◾ Operates Directly From a Single Li-Ion Cell

◾ Industries Safest And Highest Performing Strike Voltage Generation (Patented)

◾ Tight Operating Frequency Tolerance For Easier System Level RFI Control