UC2844D8TRG4

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The UC3844D8TRG4 is a device which is considered to be a member of ON Semiconductor’s Advanced Voltage Regulator and DC-to-DC Switching controller series. It is a monolithic integrated circuit that offers improved performance and flexibility in different applications, along with providing greater precision and efficiency. The basic purpose of this device is to provide an efficient, low-cost solution for controlling devices and power supplies, such as for regulating voltage and current for use in many types of applications.

Features

The primary features of the UC3844D8TRG4 are optimized frequency operation, fast and accurate current fold-back protection, current limiting and under-voltage protection, as well as a wide input range of between 3V and 32V.

The device contains a proprietary protection and resetting circuit to ensure protection by automatically restoring the system to nominal function after a fault. It also includes an internal temperature compensation circuit, which adjusts the output voltage to compensate for changes in temperature while operating. The integrated circuit also has a built-in oscillator that provides a 0-20 kHz adjustable switching frequency.

Applications

The UC3844D8TRG4 is designed to provide voltage regulation and control in motor drives, general purpose inverters, lighting controllers, and switching power supplies. It is also suitable for other power system applications, such as for renewable energy and distributed power control. The device is ideal for open loop applications, given its high performance accuracy and efficiency.

Additionally, the UC3844D8TRG4 is used in a variety of other industrial applications, including welding, small motors, servo controllers, and general-purpose industrial controllers. It can also be used in smart embedded systems, such as in home automation products, as well as in Automotive, Robotics and other applications.

Working Principle

The UC3844D8TRG4 features a single-ended Pulse Width Modulator (PWM) control architecture. This is an efficient technique that allows current to be transferred from the input source to the output load, while managing the switching frequency, current and output voltage.

The device uses input voltage, output current and operating temperature as feedback to adjust the duty cycle of the output switch accordingly, ensuring reliability and accuracy of control. The duty cycle is adjusted by comparing the signal developed by the Error Amplifier with that of the internal Oscillator, resulting in a signal that is directly proportional to the duty cycle.

Moreover, the device offers an accurate output voltage regulation, typically ±3%. It also has an optional Fold Back Current Limiting circuitry, a feature used to protect both the switching power supply and the external loads from over-current conditions.

Conclusion

The UC3844D8TRG4 is an advanced Voltage Regulator and DC-to-DC Switching controller that offers numerous benefits and features, including accurate voltage regulation, current limiting and under-voltage protection, fast and accurate current fold-back protection, a wide input range and optimized frequency operation.

It is suitable for a diverse range of applications, such as motor drives, welding, small motors, servo controllers, general-purpose industrial controllers, home automation products, Automotive, Robotics and more.

The working principle of the UC3844D8TRG4 is to control the duty cycle of the output switch, depending on the signal developed by the Error Amplifier and the Oscillator. This makes it an optimal device for open loop applications.

The specific data is subject to PDF, and the above content is for reference