LT1172 Datasheet PDF - Linear Technology

DESCRIPTION

●The LT® 1182/LT1183 are dual current mode switching regulators that provide the control function for Cold Cathode Fluorescent Lighting (CCFL) and Liquid Crystal Display (LCD) Contrast. The LT1184/LT1184F provide only the CCFL function. The ICs include high current, high efficiency

●switches, an oscillator, a reference, output drive logic, control blocks and protection circuitry.

●FEATURES

●■ Wide Input Voltage Range: 3V to 30V

●■ Low Quiescent Current

●■ High Switching Frequency: 200kHz

●■ CCFL Switch : 1.25A, LCD Switch: 625mA

●■ Grounded or Floating Lamp Configurations

●■ Open-Lamp Protection

●■ Positive or Negative Contrast Capability

●APPLICATIONS

●■ Notebook and Palmtop Computers

●■ Portable Instruments

●■ Automotive Displays

●■ Retail Terminals