TPS54478RTER

Voltage Regulators - DC DC Switching Regulators Overview

The TPS54478RTER is a synchronous step-down DC/DC converter from Texas Instruments, operating within an input voltage range of 2.95 V to 6 V. It delivers up to 4 A of output current with an adjustable output voltage between 0.6 V and 4.5 V. The device integrates high-side and low-side N-channel MOSFETs and supports switching frequencies from 200 kHz to 2 MHz. It features a WQFN-16 package, operates from -40°C to +125°C, and includes protection against overcurrent, thermal shutdown, and undervoltage lockout.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-side and low-side N-channel power MOSFETs for compact design
• Supports programmable switching frequency from 200 kHz to 2 MHz
• Includes comprehensive protection features such as thermal shutdown and cycle-by-cycle current limiting

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronics requiring efficient power conversion
• Industrial control systems with single-supply requirements
• Embedded computing platforms needing stable low-voltage rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific revision code and tape-and-reel specifications directly with Texas Instruments or authorized distributors before ordering. Confirm that the WQFN-16 package dimensions match your PCB footprint requirements. Ensure compliance with RoHS directives if applicable to your region. Check for any recent product change notices regarding material or assembly updates.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 4 A output current capability is required within a 6 V input limit. Consider the SWIFT topology for reduced external component count compared to traditional controllers. Evaluate the thermal performance in your enclosure design due to integrated MOSFETs. Compare switching frequency options against electromagnetic interference constraints and inductor size requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the TPS54x18 family of SWIFT converters, designed for high-efficiency power management in space-constrained applications. It shares architectural similarities with the TPS54218 and TPS54678 but offers distinct current ratings and feature sets tailored for specific load profiles.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include TPS54418RTER for identical electrical characteristics. Alternative options may involve TPS54319RTERG4 for lower current needs or TPS54678RTER for higher current demands, provided pin compatibility and thermal requirements are verified.