UCC38C44DG4

DC DC Switching Controllers Overview

The UCC38C44DG4 is a BiCMOS low-power current-mode PWM controller manufactured by Texas Instruments. It operates within a supply voltage range of 9V to 18V and supports switching frequencies up to 1 MHz. The device features a maximum duty cycle of 50% and provides a peak output drive current of 1 A. It is housed in an SOIC-8 package and is rated for operation between 0°C and +70°C. Supported topologies include Boost, Buck, Flyback, and Forward configurations.

DC DC Switching Controllers Feature Summary

• Implements current-mode control architecture for enhanced transient response and simplified compensation.

DC DC Switching Controllers Applications

• Boost converter designs
• Flyback power supplies
• Forward converter circuits

DC DC Switching Controllers Procurement Notes

Verify the specific suffix DG4 against official manufacturer documentation to confirm lead-free status and RoHS compliance details. Ensure the SOIC-8 package dimensions match the target PCB footprint requirements. Cross-reference the operating temperature range with system thermal constraints before finalizing procurement decisions.

DC DC Switching Controllers Selection Notes

Select this component when a low-power current-mode solution is required for isolated or non-isolated DC-DC conversion. The 50% duty cycle limit restricts usage in certain high-step-up applications compared to variants offering higher duty cycles. Evaluate the 1 MHz frequency capability against EMI requirements and magnetic component sizing constraints.

DC DC Switching Controllers Part Context

This part belongs to the UCC38C4x series of BiCMOS low-power current-mode PWM controllers. It shares functional similarities with other members like the UCC38C43 and UCC38C45, differing primarily in duty cycle limits and pinout variations. The series is designed for cost-sensitive, low-to-medium power applications requiring efficient regulation.

DC DC Switching Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative models such as UCC38C44DR based on electrical specifications and package compatibility through official datasheets.