UC2844AQD8

Power Supply Controllers, Monitors Overview

The UC2844AQD8 is an automotive-grade, current-mode PWM controller manufactured by Texas Instruments. It operates within a supply voltage range of 10V to 30V and supports switching frequencies up to 500 kHz. The device features a maximum duty cycle of 50% and includes integrated high-current output drivers capable of sourcing and sinking 1 A. Designed for robust performance in harsh environments, it functions reliably across an extended temperature range from -40°C to +125°C. The component utilizes an 8-pin SOIC package and supports standard topologies including Boost, Buck, Flyback, and Forward configurations.

Power Supply Controllers, Monitors Feature Summary

• Automotive-grade qualification ensuring reliability under demanding environmental conditions
• Integrated high-current output drivers for direct gate drive capability
• Current-mode control architecture with fixed 50% maximum duty cycle limit

Power Supply Controllers, Monitors Applications

• Automotive DC-DC converter designs
• Isolated flyback power supplies
• Forward converter applications
• Boost and buck topology implementations

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'D8' against official Texas Instruments documentation to confirm the exact tape-and-reel packaging configuration and length. Ensure that the automotive grade designation aligns with your system's functional safety requirements. Cross-reference the ordering part number with the manufacturer's latest datasheet to confirm availability and any potential obsolescence notices before finalizing procurement plans.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing power systems requiring automotive certification and operation at elevated temperatures up to 125°C. The 50% duty cycle limitation makes it suitable for non-isolated or transformer-coupled topologies where continuous conduction mode stability is required. Consider the 1A output drive strength for driving medium-power MOSFETs without external buffer circuits.

Power Supply Controllers, Monitors Part Context

This device belongs to the UC2844A series of current-mode PWM controllers. It shares architectural similarities with the UC2844 but distinguishes itself through automotive-grade screening and extended temperature ratings. The family is designed for cost-effective, high-performance power management solutions in industrial and automotive sectors.

Power Supply Controllers, Monitors Replacement Considerations

UC2844AD8TRG4

Power Supply Controllers, Monitors FAQ

What is the maximum duty cycle supported by the UC2844AQD8?

The device has a fixed maximum duty cycle of 50%.

Does the UC2844AQD8 support synchronous rectification?

No, the UC2844AQD8 does not include internal circuitry for synchronous rectification; it provides a single high-side/lower-side driver output.