UCC2800DG4

Power Supply Controllers, Monitors Overview

The UCC2800DG4 is a low-power BiCMOS current-mode PWM controller manufactured by Texas Instruments. It supports multiple topologies including flyback, forward, push-pull, and half-bridge configurations. The device operates with a switching frequency up to 1 MHz and features a maximum duty cycle of 50 percent for bridge applications. It provides an output drive current of 1 A at a voltage of 10.5 V. The component functions within a temperature range of -40°C to +105°C and is housed in an SOIC-8 surface-mount package.

Power Supply Controllers, Monitors Feature Summary

• Integrates current-mode control architecture for simplified compensation design
• Supports versatile power supply topologies including isolated and non-isolated variants
• Features programmable oscillator for flexible switching frequency selection
• Includes built-in protection mechanisms such as undervoltage lockout

Power Supply Controllers, Monitors Applications

• Flyback converters for offline power supplies
• Forward converters in industrial equipment
• Push-pull and half-bridge DC-DC converters
• Power factor correction circuits

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix DG4 indicates tape and reel or tube packaging depending on distributor configuration. Confirm RoHS compliance status through official documentation. Ensure the SOIC-8 pinout matches your PCB layout requirements. Check for moisture sensitivity level ratings prior to soldering. Validate that the operating voltage range aligns with your system's input specifications.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing low-power applications requiring current-mode control. It is suitable for systems needing support for multiple converter topologies. Consider its 1 MHz switching capability for compact magnetic designs. Evaluate the 1 A output drive strength against gate charge requirements. Verify thermal performance within the specified industrial temperature range.

Power Supply Controllers, Monitors Part Context

This part belongs to the UCC280x series of switching controllers from Texas Instruments. It represents a legacy BiCMOS technology solution for general-purpose power management. The device is often compared with newer CMOS-based controllers offering enhanced integration. It serves as a foundational component for various AC-DC and DC-DC conversion architectures.

Power Supply Controllers, Monitors Replacement Considerations

Direct substitutes include other UCC280x series variants such as UCC2801 or UCC2802 if pin compatibility is required. Cross-reference with UCC28C40 for similar functionality in different packages. Verify electrical parameters match before substitution. Consult manufacturer guidelines for any functional differences between revisions.