UCC28C44DG4

DC DC Switching Controllers Overview

The UCC28C44DG4 is a BiCMOS low-power current-mode PWM controller from Texas Instruments, designed for offline AC-DC converters. It supports Boost, Flyback, and Forward topologies with a single output. The device operates at a switching frequency of 1 MHz and features a maximum duty cycle of 50%. It provides an output drive current of 1 A and handles voltages up to 18 V. Operating temperature ranges from -40°C to +105°C. The component is housed in an SOIC-8 surface-mount package.

DC DC Switching Controllers Feature Summary

• Implements current-mode PWM control architecture for efficient power regulation.
• Utilizes BiCMOS technology to achieve low quiescent current consumption.
• Provides robust gate drive capability suitable for driving external power switches.

DC DC Switching Controllers Applications

• Offline flyback converter designs
• Boost converter applications
• Forward converter implementations

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'G4' confirms lead-free compliance and RoHS status as per manufacturer specifications. Confirm the SOIC-8 package variant matches your PCB footprint requirements. Ensure the operating voltage and thermal limits align with your system design constraints before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component when high-frequency operation at 1 MHz is required to reduce passive component size. Consider its low-power characteristics for applications where standby efficiency is critical. Verify that the 50% duty cycle limit fits the input-to-output voltage ratio of the intended topology.

DC DC Switching Controllers Part Context

This part belongs to the UCC28C44 series of current-mode PWM controllers. It serves as a specialized solution for compact offline power supplies. The DG4 designation indicates a specific tape-and-reel packaging option within the SOIC-8 family, distinguishing it from tube-packaged variants.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Texas Instruments resources for cross-reference data if alternative sourcing is required.