The LTC3805 is a current mode controller for flyback DC/DC converters designed to drive an N-channel MOSFET in high input and output voltage converter applications. Operating frequency and slope compensation can be programmed by external resistors. Programmable overcurrent sensing protects the converter from short-circuits. Soft-start can be programmed using an external capacitor and the soft-start capacitor also programs an automatic restart feature. The LTC3805 provides ±1.5% output voltage accuracy and consumes only 360μA of quiescent current during normal operation and only 40μA during micropower startup. Using a 9.5V internal shunt regulator, the LTC3805 can be powered from a high VIN through a resistor or it can be powered directly from a low impedance DC voltage of 9V or less. The LTC3805 is available in the 10-lead MSOP package and the 3mm × 3mm DFN package. Turn On Voltage LTC3805 8.4V LTC3805-5 4.5V Applications * Telecom Power Supplies * 42V and 12V Automotive Power Supplies * Isolated Electronic Equipment * VIN and VOUT Limited Only by External Components * Adjustable Slope Compensation * Adjustable Overcurrent Protection with Automatic Restart * Adjustable Operating Frequency (70kHz to 700kHz) with One External Resistor * Synchronizable to an External Clock * ±1.5% Reference Accuracy https://elecena.pl/product/259791/adjustable-frequency-current-mode-flyback-dc-dc-controller 2007-03-04 https://elecena.pl/product/259791/adjustable-frequency-current-mode-flyback-dc-dc-controller 2017-10-09 https://elecena.pl/product/259791/adjustable-frequency-current-mode-flyback-dc-dc-controller 2025-01-21