The LT1182CS#PBF is a dual current mode Switching Regulator provides the control function for cold cathode fluorescent lighting (CCFL) and liquid crystal display (LCD) contrast. The LT1182 permits positive or negative voltage LCD contrast operation. The LT1182 supports grounded and floating lamp configurations. It operates with input supply voltages from 3 to 30V. The IC also has a battery supply voltage pin that operates from 4.5 to 30V. An active low shutdown pin typically reduces total supply current to 35μA for standby operation. A 200kHz switching frequency minimizes the size of required magnetic components. The use of current mode switching techniques with cycle-by-cycle limiting gives high reliability and simple loop frequency compensation.
