LTC3805HMSE#PBF, DC/DC Controller, Flyback, 1 Output, 80% Duty Cycle, 700kHz, MSOP-EP-10

Полупроводники - Микросхемы\Микросхемы Управления Питанием\DC - DC Устройства Управления Питанием\DC - DC КонтроллерыLTC®3805 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. This provides ±1.5% output voltage accuracy and consumes only 360µA of quiescent current during normal operation and only 40µA during micropower start-up. Using a 9.5V internal shunt regulator, this 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. Typical applications are 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• Current mode operation for excellent line and load transient response• RUN pin with precision threshold and adjustable hysteresis• Programmable soft-start with one external capacitor• Input DC supply current is 360µA (normal operation (fOSC=200KHz))• 10-lead plastic MSOP package• Temperature rating range from -40°C to 150°C