TPS54478RTET

Voltage Regulators - DC DC Switching Regulators Overview

The TPS54478RTET is a synchronous step-down converter from Texas Instruments featuring two integrated MOSFETs. It operates with an input voltage range of 2.95 V to 6 V and delivers up to 4 A of output current. The device utilizes a fixed 2 MHz switching frequency for compact design. It supports adjustable output voltages starting from 0.6 V. The component is housed in a 16-pin WQFN package with an exposed pad, suitable for surface mount installation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates two low-on-resistance MOSFETs to maintain high efficiency under load
• Employs SWIFT transient response topology for stable operation with small external components
• Includes programmable soft-start to limit inrush current during startup
• Features comprehensive protection mechanisms including thermal shutdown and cycle-by-cycle current limiting

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Power supplies for industrial equipment
• Battery-powered portable devices requiring efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix RTET confirms the 16-WQFN package and reel packaging configuration. Ensure compatibility with RoHS standards if required by your manufacturing process. Cross-reference the datasheet revision date to confirm technical specifications match your design requirements before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems requiring a 4 A output from a 2.95 V to 6 V input source. The fixed 2 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Consider the thermal performance of the WQFN package and ensure adequate PCB copper area for heat dissipation to maintain reliability under continuous load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the TPS54x78 family of SWIFT converters, designed for high-density power applications. It shares architectural similarities with the TPS54678 but differs in maximum output current capability. The family emphasizes compact footprint and ease of implementation through integrated power stages and minimal external component count.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The TPS54678RTET serves as a higher-current alternative within the same family, offering 6 A output capability. Verify that the increased current rating does not necessitate changes to thermal management or PCB layout constraints in your existing design.