Floating CCFL with dual polarity contrast
Anthony Bonte
Abstract
The LT1182/LT1183/LT1184F/LT1184 family of dual fixed frequency, current mode switching regulators that provide the control function for cold cathode fluorescent lighting and liquid-crystal display contrast, are described.
Keywords
Switching regulator
cold cathode fluorescent lighting
LCD display contrast
LT1182
LT1183
LT1184F
LT1184
Current generation portable computers and instruments use backlit liquid-crystal displays (LCDs). Cold cathode fluorescent lamps (CCFLs) provide the highest available efficiency for backlighting the display. The lamp requires high voltage AC to operate, mandating an efficient, high voltage DC/AC converter. The LCD also requires ...
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