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LTC1697 - High Efficiency Low Power 1W CCFL Switching Regulator

Features

  • Operates from Single Li-Ion Battery.
  • 2.8V to 5.5V Input Voltage Range.
  • Very Low Shutdown Current:.

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Full PDF Text Transcription

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U U LTC1697 High Efficiency Low Power 1W CCFL Switching Regulator FEATURES ■ Operates from Single Li-Ion Battery ■ 2.8V to 5.5V Input Voltage Range ■ Very Low Shutdown Current: <2µA ■ Synchronous Buck Architecture for High Efficiency ■ PWM Dimming Frequency Adjustable with a Single Capacitor ■ Accurate Lamp Current Maximizes Lamp Lifetime ■ Fixed Frequency Operation at 300kHz ■ Internal or External PWM Dimming ■ Small 10-Pin MSOP Package U APPLICATIO S ■ PDAs ■ Handheld Computers ■ Portable Instruments ■ Handheld GPS with Map Display ■ Handheld TV/Video Monitor DESCRIPTIO The LTC®1697 is designed to control a single 1W cold cathode fluorescent lamp (CCFL). An internal PWM dimming system maximizes efficiency and dimming range.
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