LT1182CS

开关稳压器 LT1182 - CCFL/LCD Contrast Switching Regulators

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