TPS54427DDA

Voltage Regulators - DC DC Switching Regulators Overview

The TPS54427DDA is a synchronous step-down DC/DC converter from Texas Instruments, operating within an input voltage range of 4.5 V to 18 V. It delivers a continuous output current of 4 A with an adjustable output voltage spanning from 760 mV to 7 V. The device integrates internal power switches and operates at a fixed switching frequency of 650 kHz. Key electrical specifications include a typical quiescent current of 3 µA and a maximum operating junction temperature of 125 °C. It is housed in an SO-PowerPAD-EP-8 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-side and low-side N-channel MOSFETs for efficient synchronous rectification
• Utilizes SWIFT topology to minimize external component count and solution size
• 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 industrial equipment
• Power supply stages for embedded computing systems
• Battery-powered devices requiring efficient voltage conversion
• Telecommunications infrastructure power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'DDA' corresponds to the tube packaging format rather than reel or cut tape options when sourcing. Confirm RoHS compliance status through the manufacturer's official documentation prior to integration. Ensure the ordering part number matches the required package variant to avoid assembly discrepancies.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring a 4 A output capability with a wide input voltage range up to 18 V. The fixed 650 kHz frequency allows for compact passive component selection compared to lower-frequency alternatives. Consider the thermal performance of the PowerPAD package for high ambient temperature environments.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the TPS54x27 family of SWIFT converters, designed for high-efficiency power management. It shares architectural similarities with other members like the TPS54627 but differs in output current ratings. The series targets applications needing robust performance in space-constrained PCB layouts.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The TPS54427DRCT serves as a functional alternative with identical electrical characteristics but utilizes a 10-VFDFN package instead of the SO-PowerPAD-EP-8 form factor. Designers must account for footprint changes and thermal dissipation differences when substituting.