UCC28C45MDREP

Overview

The UCC28C45MDREP is a BiCMOS low-power current-mode PWM controller manufactured by Texas Instruments. It operates within an input voltage range of 12V to 18V and supports switching frequencies up to 1 MHz. The device features a maximum duty cycle of 50% and provides an output drive capability of 200 mA. It is housed in an 8-pin SOIC package with an extended operating temperature range from -55°C to 125°C.

Feature Summary

• Implements current-mode control architecture for enhanced transient response
• Utilizes BiCMOS technology to achieve low quiescent power consumption
• Supports flyback, forward, and boost converter topologies
• Features robust thermal performance suitable for high-temperature environments

Applications

• High-efficiency AC/DC power supplies
• Flyback converter designs
• Forward converter architectures
• Boost DC-DC conversion systems

Procurement Notes

Verify the specific suffix 'MDREP' against the official Texas Instruments datasheet to confirm it denotes the enhanced product variant or specific tape-and-reel configuration. Ensure the ordering part number matches the required package style and temperature grade before finalizing procurement orders.

Selection Notes

Select this component when designing isolated or non-isolated converters requiring low standby power and high-frequency operation. The wide temperature range makes it suitable for industrial applications where ambient temperatures may exceed standard commercial limits. Confirm that the 200 mA drive current meets the gate charge requirements of the external MOSFETs.

Part Context

This component belongs to the UCCx8C4x family of BiCMOS low-power current-mode PWM controllers. It shares functional similarities with other members like the UCC28C43 and UCC28C45DR but offers specific packaging and environmental ratings defined by the MDREP designation within the Texas Instruments portfolio.

Replacement Considerations

Direct substitutes include UCC28C45DR and UCC28C45DGKR. Verify pin compatibility and electrical specifications before substitution.