UCC28C42DG4

DC DC Switching Controllers Overview

The UCC28C42DG4 is a BiCMOS low-power current-mode PWM controller manufactured by Texas Instruments. It supports Boost, Flyback, and Forward converter topologies with a switching frequency up to 1 MHz. The device features a maximum duty cycle of 96% and operates within a supply voltage range of 9 V to 18 V. It provides a peak output drive current of 1 A and functions reliably across an operating temperature range from -40°C to +105°C. The component is housed in an 8-SOIC package.

DC DC Switching Controllers Feature Summary

• Implements current-mode control architecture for stable regulation
• Designed for low-power operation using BiCMOS technology
• Capable of driving external power switches with high peak current

DC DC Switching Controllers Applications

• Boost converter designs
• Flyback converter implementations
• Forward converter circuits

DC DC Switching Controllers Procurement Notes

Verify the specific suffix DG4 against the manufacturer's official documentation to confirm pinout compatibility and RoHS status. Confirm that the 8-SOIC package matches your PCB footprint requirements. Ensure the 9 V to 18 V supply range aligns with your system's input voltage specifications before finalizing procurement decisions.

DC DC Switching Controllers Selection Notes

Select this component when designing isolated or non-isolated converters requiring current-mode control. It is suitable for applications needing a maximum duty cycle near 100% but limited to 96%. Consider the 1 MHz switching frequency for compact magnetic component sizing. Verify thermal performance within the -40°C to +105°C range for your specific enclosure environment.

DC DC Switching Controllers Part Context

This part belongs to the UCC28C42 series of low-power current-mode PWM controllers. It shares functional similarities with other members like the UCC28C42P and UCC28C42DGK, differing primarily in packaging and manufacturing revisions. The DG4 designation indicates a specific tape-and-reel or tube variant within the SOIC-8 form factor family.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include UCC28C42D and UCC28C42DGKR. Verify electrical parameters and pin compatibility with the original datasheet before substitution.