Product Overview: UCC28C45DRG4 by Texas Instruments

The UCC28C45DRG4 from Texas Instruments is a high-performance, BiCMOS off-line controller designed for switch mode power supplies. This advanced integrated circuit (IC) is part of the UCC28C4x series, which are known for their reliability and efficiency in power conversion applications. The UCC28C45DRG4 is particularly suitable for a wide range of power supply designs, including isolated and non-isolated topologies.

Key Features

• Flexible Operation Modes: The UCC28C45DRG4 can operate in either current mode or voltage mode, providing designers with the flexibility to choose the control strategy that best suits their application.
• High-Performance BiCMOS Technology: Incorporating BiCMOS technology allows for low power consumption while maintaining high-speed operation. This results in improved efficiency and faster response times in power supply systems.
• Wide Range of Operating Frequencies: This device is capable of operating at frequencies up to 1 MHz, allowing for the design of power supplies with smaller components and reduced physical size.
• Trimmed Oscillator Discharge Current: The oscillator discharge current is accurately trimmed, which ensures precise frequency control over temperature and process variations.
• Low Startup and Operating Current: The UCC28C45DRG4 features a low startup current of typically 100 µA and an operating current of typically 2.5 mA, making it suitable for low-power applications.
• Under-Voltage Lockout (UVLO): Both line and low-side UVLO circuits ensure that the IC operates at the correct voltage levels, enhancing the safety and reliability of the power supply.

Applications

The UCC28C45DRG4 is versatile and can be used in various applications, including:

• AC/DC power supplies
• DC/DC converters
• Offline adapters
• Telecommunication equipment
• Industrial power systems

Package and Availability

The UCC28C45DRG4 is offered in a SOIC-8 (D) package, which is a small-outline integrated circuit with 8 pins. This compact form factor makes it suitable for space-constrained applications. The product is available through Texas Instruments and authorized distributors, ensuring easy access for designers and manufacturers globally.

In summary, the UCC28C45DRG4 is a highly capable controller IC that brings together flexibility, efficiency, and reliability, making it an excellent choice for a wide range of power supply applications.