UCC2804QDRQ1

Overview

The UCC2804QDRQ1 is an automotive-grade, low-power BiCMOS current-mode PWM controller designed for high-frequency switching applications. It operates within a supply voltage range of 10 V to 18 V and supports multiple topologies including Boost, Buck, Buck-Boost, Flyback, and Forward converters. The device features a fixed 1 MHz switching frequency with a maximum duty cycle of 50%. It provides a rail-to-rail output capable of sourcing or sinking 1 A, ensuring robust gate drive performance. Operating temperatures span from -40°C to +125°C, and it is housed in an SOIC-8 package.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle environments.
• Low-power BiCMOS technology enables efficient operation with minimal quiescent current consumption.
• Current-mode control architecture facilitates stable regulation across various converter topologies.
• High-current rail-to-rail output stage drives external power switches effectively.

Applications

• Automotive DC-DC converter designs
• On-board charger systems
• Isolated flyback power supplies
• Forward converter implementations

Procurement Notes

Verify the complete part number including suffixes to ensure correct packaging and temperature grade. Confirm AEC-Q100 certification requirements match specific automotive application standards. Check datasheet revisions for any updates to electrical characteristics or recommended operating conditions before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring high-frequency operation at 1 MHz with strict automotive reliability standards. Ensure the input voltage remains within the 10 V to 18 V range for optimal performance. Consider the 50% maximum duty cycle limitation when designing boost or buck-boost circuits. Verify thermal management capabilities for the SOIC-8 package under maximum load conditions.

Part Context

This device belongs to the UCC28C4x series of low-power current-mode PWM controllers. It shares functional similarities with other automotive-grade controllers but is distinguished by its specific 1 MHz frequency and BiCMOS process. The QDRQ1 suffix indicates automotive qualification, tape-and-reel packaging, and standard commercial temperature range extension.

Replacement Considerations

Direct substitutes include UCC28C44QDRQ1 and UCC2803QDRQ1. Verify pin compatibility and electrical parameter alignment, particularly regarding switching frequency and output drive capability, before implementing any cross-reference solutions.