Texas Instruments

UC2572N

UC2572N Description

The UC2572N from Texas Instruments is a specialized transistor driver designed for flyback topology DC-DC switching controllers. This integrated circuit (IC) is housed in an 8-DIP package and is optimized for through-hole mounting, making it suitable for a variety of industrial and power supply applications. Despite its obsolete status, the UC2572N remains a robust solution for applications requiring reliable and efficient power conversion.

UC2572N Features

• Output Type: The UC2572N is designed as a transistor driver, providing a negative output configuration. This configuration is ideal for applications where a negative voltage output is required.
• Supply Voltage Range: The IC operates within a wide supply voltage range of 4.75V to 30V, offering flexibility in power supply design and compatibility with various input voltage sources.
• Switching Frequency: With a switching frequency of 100kHz, the UC2572N ensures efficient power conversion and minimal energy loss, making it suitable for high-frequency applications.
• Control Features: The UC2572N includes current limit and ramp control features, which enhance the stability and reliability of the power conversion process. These features help protect the circuit from overcurrent conditions and ensure smooth operation.
• Duty Cycle: The maximum duty cycle of 92% allows for high efficiency in power delivery, making the UC2572N an excellent choice for applications requiring high power output.
• Output Phases: The single output phase ensures simplicity and ease of integration into existing power supply designs.
• Compliance and Packaging: The UC2572N is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards. It is packaged in a tube, which provides protection and ease of handling during assembly.

UC2572N Applications

The UC2572N is particularly well-suited for applications that require a flyback topology for power conversion. Its wide supply voltage range and high switching frequency make it ideal for:

• Power Supplies: The UC2572N can be used in various power supply designs, including those for industrial equipment, telecommunications, and consumer electronics.
• Adaptive Voltage Regulators: Its current limit and ramp control features make it suitable for adaptive voltage regulators that need to maintain stability under varying load conditions.
• Battery Chargers: The high efficiency and wide input voltage range make the UC2572N a good fit for battery chargers that require reliable and efficient power conversion.

Conclusion of UC2572N

The UC2572N from Texas Instruments is a versatile and reliable transistor driver for flyback topology DC-DC switching controllers. Its wide supply voltage range, high switching frequency, and robust control features make it an excellent choice for a variety of power conversion applications. Despite its obsolete status, the UC2572N continues to offer significant advantages in terms of efficiency, reliability, and ease of integration. For applications requiring a negative output configuration and high efficiency, the UC2572N remains a viable and effective solution.