Overview of Texas Instruments UCC38083DR

The UCC38083DR is a versatile and high-performance pulse width modulation (PWM) controller from Texas Instruments, designed for power supply applications that demand efficient and reliable operation. This integrated circuit is part of the UCC3808x family, which is known for its low-power, biCMOS current-mode PWM controllers. The UCC38083DR is specifically engineered to cater to a wide array of power conversion applications, including off-line and DC-to-DC converters, which require precise voltage or current regulation.

Key Features

• Advanced BiCMOS Technology: The UCC38083DR leverages cutting-edge BiCMOS construction to ensure low power consumption while maintaining high-speed operation.
• Programmable Switching Frequency: The device allows for a programmable switching frequency up to 1 MHz, enabling flexibility in the design of the power converter.
• Current Mode Control: This control method provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation.
• Peak Current Limit Protection: The UCC38083DR incorporates peak current limit protection to safeguard the system against overcurrent conditions.
• Low Startup and Operating Current: The device is designed with low startup current (typically 0.15 mA) and a low operating current (typically 2.5 mA), which is ideal for power-efficient designs.
• Internally Trimmed Bandgap Reference: The 2.5V reference is trimmed to 1% accuracy, which is essential for consistent and precise output voltage regulation.
• Soft Start Capability: The soft-start function minimizes stress on the power converter during startup by gradually increasing the output voltage.

Applications

The UCC38083DR is suitable for a broad spectrum of applications, including:

• AC-DC power supplies
• Isolated and non-isolated DC-DC converters
• Power converters for telecom and datacom systems
• Power supplies for consumer electronics
• Industrial power systems

Package and Availability

The Texas Instruments UCC38083DR is offered in a compact 8-pin SOIC package, providing a space-saving solution for PCB layouts. Its industry-standard footprint ensures compatibility with a wide range of existing designs. The device is available through Texas Instruments and authorized distributors, ensuring easy procurement for your design and production needs.