TPS5450QDDARQ1

Voltage Regulators - DC DC Switching Regulators Overview

The TPS5450QDDARQ1 is an automotive-grade SWIFT step-down switching regulator with a 5.5V to 36V input range and 5A output current. It operates at a fixed 500kHz frequency, delivering adjustable outputs from 1.22V to 31V. The device features internal compensation, 18µA shutdown current, and integrated high-side MOSFETs. It includes overcurrent protection, thermal shutdown, and UVLO, operating within -40°C to 125°C in an 8-pin SOIC PowerPAD package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards for robust performance in vehicle environments
• Internal feedback loop compensation minimizes external component count and simplifies design complexity
• Integrated voltage error amplifier ensures tight voltage regulation accuracy during transient load conditions
• Built-in protection mechanisms include overcurrent limiting, overvoltage protection, and thermal shutdown

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring stable power delivery
• High-density point-of-load regulators in vehicle electronics
• Power supply stages for LCD and plasma display drivers
• General automotive DC-DC conversion applications

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the Q1 suffix confirms AEC-Q100 automotive qualification status before integration. Ensure the SO-PowerPAD-8 package matches your PCB footprint and thermal requirements. Confirm that the 500kHz fixed frequency aligns with your EMI constraints. Validate that the 5A continuous current rating meets peak load demands without derating issues.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when automotive certification is mandatory for buck converter applications. It suits designs needing high efficiency with minimal external parts due to internal compensation. Consider it for space-constrained boards where the compact 8-pin package is advantageous. Ensure input voltages remain within the 5.5V to 36V window for optimal operation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to Texas Instruments' TPS5450 family of SWIFT converters. It shares architectural similarities with non-automotive variants like the TPS5450 but adds rigorous automotive testing. The family focuses on high-current buck conversion with simplified design workflows through integrated control loops and protection features.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

TPS5450DDARQ1 serves as a direct functional substitute within the same automotive series. Verify pin compatibility and thermal characteristics when swapping between these specific revisions.