Texas Instruments

UC2854BN

UC2854BN Description

The UC2854BN is a high-performance, average current mode, power factor correction (PFC) controller designed by Texas Instruments. This through-hole mounted device operates within a switching frequency range of 80kHz to 120kHz and is compatible with a supply voltage range of 10V to 20V. The UC2854BN is compliant with the latest RoHS3 standards, making it suitable for environmentally friendly applications. With a startup current of 250 µA, this device is designed for low power consumption during initial operation. The product is currently in its last time buy phase, indicating that it may be discontinued in the future.

UC2854BN Features

• Average Current Mode Operation: The UC2854BN operates in average current mode, providing improved stability and transient response compared to peak current mode controllers.
• Wide Switching Frequency Range: The device can operate at switching frequencies between 80kHz and 120kHz, allowing for flexible design and optimization of the power supply.
• Low Startup Current: With a startup current of 250 µA, the UC2854BN minimizes power consumption during initial operation, extending the battery life of portable devices.
• RoHS3 Compliance: The UC2854BN is compliant with the latest RoHS3 standards, making it suitable for environmentally friendly applications.
• Through-Hole Mounting: The through-hole mounting type provides a robust and reliable connection in various power supply designs.

UC2854BN Applications

The UC2854BN is ideal for a wide range of applications where high efficiency and power factor correction are required. Some specific use cases include:

1. AC-DC Power Supplies: The UC2854BN can be used in AC-DC power supplies for consumer electronics, industrial equipment, and telecommunications systems.
2. Battery Chargers: This device is suitable for battery chargers, especially those requiring high efficiency and low power consumption during startup.
3. LED Lighting: The UC2854BN can be used in LED lighting applications, where high efficiency and power factor correction are crucial for energy savings and compliance with energy standards.
4. Uninterruptible Power Supplies (UPS): The device can be employed in UPS systems to ensure high efficiency and reliable power backup during power outages.

Conclusion of UC2854BN

The UC2854BN is a versatile and high-performance PFC controller from Texas Instruments, offering average current mode operation, a wide switching frequency range, and low startup current. Its RoHS3 compliance and through-hole mounting make it suitable for a variety of applications, including AC-DC power supplies, battery chargers, LED lighting, and UPS systems. While the product is currently in its last time buy phase, it remains an excellent choice for designers looking for a reliable and efficient PFC solution.