LX1691A

www.DataSheet4U.com TM ® LX1691A Enhanced Multi-Mode CCFL Controller P RODUCTION D ATA S HEET DESCRIPTION KEY FEATURES ƒ Simultaneous Amplitude And Duty Cycle Dimming Modes ƒ Resistor programmable min and max lamp currents ƒ Digital Dimming Can Synch To External Or Internal Clocks ƒ 120 ms Power On Delay ƒ Open Or Shorted Lamp Regulation & Shutdown ƒ “On Chip” Full Wave Lamp Current Rectifier ƒ 16 Pin TSSOP Package ƒ Very Stable Oscillator with OnChip timing capacitor ƒ Enhanced Digital Dimming Resolution ƒ Wide Input Voltage Capable BENEFITS ƒ Low Component Count / Module Cost / And Size ƒ High “Nits/Watt” Efficiency ƒ Operates Directly From a Single Li-Ion Cell ƒ Industries Safest And Highest Performing Strike Voltage Generation (Patented) ƒ Tight Operating Frequency Tolerance For Easier System Level RFI Control Mircrosemi’s LX1691A is an enhanced Direct Drive CCFL (Cold Cathode Fluorescent Lamp) Controller. Its architecture is based on the LX1691. LX1691A 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. New versatile dimming circuitry can accept digital and analog control inputs and provides six different dimming modes that control both lamp current amplitude and duty cycle, either simultaneously or separately. Designers can select normal or reverse polarity dimming and precisely program mini-mum and maximum lamp currents with resistors. The LX1691A fault...