The LTC1697 is designed to control a single 1W cold cathode fluorescent lamp (CCFL). An internal PWM dimming system maximizes efficiency and dimming range. Accurate lamp currents can be set with a single external resistor. The LTC1697 includes a synchronous current mode PWM controller with internal 1A MOSFET switches. It contains a 300kHz oscillator, 0.8V reference, and internal current sense. It operates from a 2.8V to 5.5V input voltage. The LTC1697 also has a thermal limit and a shutdown that reduces supply current to <2µA. The LTC1697 is available in the MSOP-10 package. Applications * PDAs * Handheld Computers * Portable Instruments * Handheld GPS with Map Display * Handheld TV/Video Monitor * 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 https://elecena.pl/product/252057/high-efficiency-low-power-1w-ccfl-switching-regulator 2007-03-02 https://elecena.pl/product/252057/high-efficiency-low-power-1w-ccfl-switching-regulator 2014-06-11 https://elecena.pl/product/252057/high-efficiency-low-power-1w-ccfl-switching-regulator 2025-01-19