Product Summary
The LT1184FCS is a dual current mode switching regulator that provides the control function for Cold Cathode Fluorescent Lighting (CCFL) and Liquid Crystal Display (LCD) Contrast. The LT1184FCS includes high current, high efficiency switches, an oscillator, a reference, output drive logic, control blocks and protection circuitry. The LT1182 permits positive or negative voltage LCD contrast operation. The LT1184FCS supports grounded and floating lamp configurations. The LT1184 supports only grounded lamp configurations. The applications of the LT1184FCS include Notebook and Palmtop Computers, Portable Instruments, Automotive Displays and Retail Terminals.
Parametrics
LT1184FCS absolute maximum ratings: (1)VIN, BAT, Royer, Bulb: 30V; (2)CCFL VSW, LCD VSW: 60V; (3)Shutdown: 6V; (4)ICCFL Input Current: 10mA; (5)DIO Input Current (Peak, < 100ms): 100mA; (6)LT1182: FBP, FBN, LT1183: FB Pin Current: ±2mA; (7)LT1183/LT1184/1184F: REF Pin Source Current: 1mA; (8)Junction Temperature: 100℃; (9)Operating Ambient Temperature Range: 0℃ to 100℃; (10)Storage Temperature Range: –65℃ to 150℃; (11)Lead Temperature (Soldering, 10 sec): 300℃.
Features
LT1184FCS features: (1)Wide Input Voltage Range: 3V to 30V; (2)Low Quiescent Current; (3)High Switching Frequency: 200kHz; (4)CCFL Switch: 1.25A, LCD Switch: 625mA; (5)Grounded or Floating Lamp Configurations; (6)Open-Lamp Protection; (7)Positive or Negative Contrast Capability.
Diagrams
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![]() LT1184FCS |
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![]() IC SW REG CCFL CONTRAST 16-SOIC |
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![]() LT1184FCS#PBF |
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![]() IC SW REG CCFL CONTRAST 16-SOIC |
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![]() LT1184FCS#TR |
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![]() IC REG SWITCH DUAL CCFL 16SOIC |
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![]() LT1184FCS#TRPBF |
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![]() IC SW REG CCFL CONTRAST 16-SOIC |
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