TPS54340BQDDARQ1

Voltage Regulators - DC DC Switching Regulators Overview

The TPS54340BQDDARQ1 is an automotive-grade synchronous step-down DC/DC converter from Texas Instruments. It integrates a high-side N-channel MOSFET and operates with an input voltage range of 4.5V to 28V. The device delivers a fixed output current capability of 3.5A. It features adjustable switching frequencies up to 600kHz, enabling the use of small external components. Integrated protections include overcurrent protection, thermal shutdown, and undervoltage lockout. The component is housed in a VQFN-16 package designed for space-constrained applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle environments
• Integrated synchronous rectification for improved efficiency and reduced external component count
• Built-in comprehensive protection mechanisms including thermal shutdown and cycle-by-cycle current limiting

Voltage Regulators - DC DC Switching Regulators Applications

• Infotainment systems in automotive electronics
• Body control modules requiring stable power regulation
• Telematics units and gateway devices

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'RQ1' confirms automotive grade status and tape-and-reel packaging. Ensure the ordering part number matches the exact pin configuration and temperature rating required for your design. Cross-reference with official TI documentation to confirm RoHS compliance and lead-free status before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing automotive power stages requiring a 3.5A output from a 4.5V to 28V input rail. It is suitable for applications needing high efficiency and compact footprint due to integrated MOSFETs. Consider the 600kHz switching frequency for balancing component size against noise performance in sensitive automotive circuits.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the TPS54x family of synchronous buck converters optimized for industrial and automotive markets. It shares architectural similarities with other members but is distinguished by its specific automotive qualification and fixed 3.5A current rating. The QDDARQ1 designation indicates a qualified version with specific packaging and reel specifications tailored for mass production in automotive supply chains.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements within the same family include the TPS54340 without the automotive suffix if automotive qualification is not strictly required. For higher current needs, consider the TPS54330 or TPS54360 variants. Verify pin compatibility and thermal characteristics when substituting with non-automotive grades.