UCC2804D

Overview

The UCC2804D is a PWM current-mode controller manufactured by Texas Instruments, designed for high-frequency switching applications. It supports Boost, Flyback, and Forward topologies within an 8-pin SOIC package. The device operates with a maximum switching frequency of 1 MHz and features a maximum duty cycle of 50%. It provides a 1 A output drive capability at 5 V and consumes 500 µA of supply current. The unit functions across a temperature range from -40°C to +85°C.

Feature Summary

• Implements current-mode control architecture for enhanced transient response
• Supports multiple isolated and non-isolated power converter topologies
• Features low quiescent current consumption for improved efficiency

Applications

• High-density AC-DC adapters
• Flyback converters in consumer electronics
• Forward converters for industrial power supplies

Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm exact operational ratings and packaging configurations. Ensure that the selected variant aligns with the required thermal management and voltage specifications for the target design environment before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring a single-output current-mode controller with moderate drive strength. Consider the 50% duty cycle limit and 1 MHz frequency ceiling when evaluating transformer designs and loop compensation requirements for the intended power stage configuration.

Part Context

This part belongs to the UCC280x series of switching controllers from Texas Instruments. It serves as a foundational component for general-purpose power conversion systems, offering a balance between performance and simplicity compared to more complex multi-channel or specialized family members.

Replacement Considerations

UCC3804N