UCC28C43MDREP

Overview

The UCC28C43MDREP is an enhanced product BiCMOS low-power current-mode PWM controller manufactured by Texas Instruments. It operates within a supply voltage range of 7.6 V to 18 V, with a typical nominal input of 15 V. The device supports switching frequencies up to 1 MHz and delivers a peak output drive current of 1 A. It features a maximum duty cycle of 96% and consumes a typical operating supply current of 2.3 mA. Designed for robust performance, it functions reliably across an extended temperature range from -55°C to +125°C. The component is housed in an 8-pin SOIC package.

Feature Summary

• Utilizes BiCMOS technology for low-power operation combined with high-current drive capability.
• Employs current-mode control architecture for improved transient response and line regulation.
• Supports multiple converter topologies including boost, flyback, and forward configurations.
• Engineered for military-grade reliability with extended industrial temperature specifications.

Applications

• Military power supply systems requiring high reliability
• Industrial DC-DC converters using flyback or forward topologies
• Automotive auxiliary power management circuits
• High-efficiency boost converter designs

Procurement Notes

Verify the specific suffix 'MDREP' against the manufacturer's official datasheet to confirm the enhanced product status and mil-spec qualification. Ensure the ordering part number matches the exact package variant and temperature grade required for your design. Cross-reference the RoHS compliance status and lead times directly with authorized distributors or Texas Instruments sales channels prior to procurement.

Selection Notes

Select this component when designing systems that demand both low quiescent current and high peak drive capability for driving external power switches. It is suitable for applications requiring wide input voltage ranges and operation in extreme environmental conditions. Consider the 8-SOIC package constraints for PCB layout and thermal management. Verify compatibility with the intended switching frequency and topology requirements before finalizing the design.

Part Context

This component belongs to the UCC28C4x series of current-mode PWM controllers from Texas Instruments. It shares architectural similarities with commercial variants but offers enhanced reliability features. The series is designed for versatile power conversion applications, providing a balance between power efficiency and control precision. It serves as a specialized solution for demanding environments where standard commercial parts may not suffice.

Replacement Considerations

The UCC28C43DR is a commercial equivalent within the same family. For automotive applications, the UCC28C43QDRQ1 offers AEC-Q100 qualification. Verify pinout compatibility and electrical parameter overlaps before substitution. Ensure the replacement meets the specific temperature and reliability requirements of the target application.

FAQ

What is the maximum switching frequency supported by the UCC28C43MDREP?

The device supports switching frequencies up to 1 MHz.

Does the UCC28C43MDREP support isolated converter topologies?

Yes, it supports flyback and forward topologies which are commonly used in isolated converter designs.

What is the operating supply voltage range for this controller?

The operating supply voltage range is specified from 7.6 V to 18 V.