Микросхемы и комплектующие LTC3805EDD-5#PBF

DC/DC контроллер , регулируемая частота, 8.8В до 75В, 1 выход, повышающий, обратноходовой, SEPIC

The LTC3805EDD-5#PBF is a current-mode DC/DC Controller designed to drive an N-channel MOSFET in flyback, boost and SEPIC converter applications. Operating frequency and slope compensation can be programmed by external resistors. Programmable overcurrent sensing protects the converter from overload and short-circuit conditions. Soft-start can be programmed using an external capacitor and the soft-start capacitor also programs an automatic restart feature. It 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, it can be powered from a high VIN through a resistor or it can be powered directly from a low impedance DC voltage from 4.7 to 8.8V.

• VIN and VOUT Limited only by external components
• 4.5V Undervoltage lockout threshold
• Adjustable slope compensation
• Adjustable overcurrent protection with automatic restart
• Synchronizable to an external clock
• ±1.5% Reference accuracy
• Only 100mV Current sense voltage drop
• RUN pin with precision threshold and adjustable hysteresis
• Programmable soft-start with one external capacitor
• 360µA Low quiescent current

Области применения

Авто, Управление Питанием, Связь и Сеть, Промышленное