Texas Instruments

UCC2804D/81221

UCC2804D/81221 Description

The UCC2804D/81221 is a PWM (Pulse Width Modulation) controller designed for offline switch-mode power supplies. Manufactured by Texas Instruments, this device is part of the UCC280x series and is housed in an 8SOIC package. It is specifically engineered to provide efficient power management solutions in a variety of applications.

This PWM controller operates within a supply voltage range of 8.3V to 11V and features a low supply current of 500 µA, making it suitable for applications where power efficiency is critical. The UCC2804D/81221 is designed for surface mount technology, ensuring ease of integration into modern circuit designs. Despite its obsolescence, the UCC2804D/81221 remains a reliable choice for legacy systems and specific use cases where its unique features are advantageous.

UCC2804D/81221 Features

• Low Supply Current: The UCC2804D/81221 boasts a low supply current of 500 µA, which is ideal for applications requiring minimal power consumption.
• Wide Supply Voltage Range: With a supply voltage range of 8.3V to 11V, this controller can operate effectively across a broad spectrum of input voltages, enhancing its versatility.
• Surface Mount Technology: The surface mount package type ensures compatibility with modern PCB assembly processes, facilitating efficient and reliable integration.
• Compliance and Safety: The UCC2804D/81221 is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards.
• Moisture Sensitivity Level: With an MSL of 1 (Unlimited), this device is suitable for various environmental conditions without the need for special handling or storage requirements.

UCC2804D/81221 Applications

The UCC2804D/81221 is well-suited for a range of applications where efficient power management is essential. Its PWM control capabilities make it ideal for offline switch-mode power supplies, such as those found in:

• Consumer Electronics: Power supplies for devices like televisions, monitors, and other home electronics.
• Industrial Equipment: Power management in industrial control systems and machinery.
• Telecommunications: Power supplies for communication equipment and infrastructure.
• Medical Devices: Power management in medical equipment where reliability and efficiency are paramount.

Conclusion of UCC2804D/81221

The UCC2804D/81221 PWM controller, despite being obsolete, continues to offer significant benefits for specific applications. Its low supply current, wide supply voltage range, and surface mount compatibility make it a reliable choice for power management solutions. The device's compliance with environmental and safety standards ensures its suitability for modern electronics manufacturing. While newer models may offer enhanced features, the UCC2804D/81221 remains a viable option for legacy systems and specialized use cases where its unique attributes are advantageous.