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BUY UC3845N https://www.utsource.net/itm/p/963049.html
SMPS Controller
The UC3845N is an 8-pin DIP integrated circuit (IC) manufactured by Motorola. It is a high performance current mode controller designed for off-line and DC-to-DC converter applications. It is capable of controlling a wide range of switching power supplies, including those with a flyback, forward, and push-pull topology. The UC3845N features an internal oscillator, an adjustable soft-start, an adjustable current limit, and an adjustable voltage reference. It also has a wide operating temperature range of -40°C to +125°C. The UC3845N is suitable for a variety of applications, including switch-mode power supplies, DC-to-DC converters, UPS systems, and battery chargers. It is also used in motor control applications, such as motor speed control, motor current control, and motor torque control. (For reference only)