UC2843DG4

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 UC2843DG4 is a monolithic integrated circuit belonging to the PMIC (Power Management) category, specifically in the Voltage Regulators subgroup, and within that, in the DC DC Switching Controllers. It was developed by Texas Instruments as a low cost, high-performance solution for various motor control and power supply applications. The UC2843DG4 offers a full range of features that provide efficient, reliable power management for a variety of applications.

Application Field

The UC2843DG4 is designed for use in a wide variety of motor control applications including DC servo systems, DC brushless motors, induction motors, and stepper motors. It is also suitable for power supply designs for both AC and DC systems, as well as for regulating output voltage in switching power supplies. It can also be used in numerous other applications such as turn-on/turn-off and overvoltage/overcurrent protection.

Working Principle

The programmable features of the UC2843DG4 allow the user to accurately set the operating parameters required for each particular application. Several external components can be used in combination with the IC, such as a varistor, thermal fuse, hysteretic transformer and resistor, to monitor the output and input voltage levels, as well as to limit or shut down the output when a voltage or current overload occurs. In addition, the overvoltage protection and temperature control loops can be used to maintain the proper operating conditions for the connected equipment.

The UC2843DG4 comprises five major functions. The oscillator generates signals to switch the output power devices when required. The error amplifier provides the proper control signal to maintain accurate output voltage regulation. The peak current circuit senses and limits the maximum current allowed, while the thermal protection circuit detects heating due to high current and, if necessary, shuts off the power supply output. Finally, the soft-start circuit limits the inrush current at the start-up, avoids the annoying turn-on noise and eliminates power transients.

Conclusion

The UC2843DG4 is a powerful integrated circuit that is suitable for a variety of motor control and power supply applications. Its programmable features and protection circuits make it a reliable and cost-efficient solution.

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