TPS54318MRTET

Overview

The TPS54318MRTET is a synchronous step-down DC-DC converter from Texas Instruments, utilizing the SWIFT topology. It operates with an input voltage range of 2.95 V to 6 V and delivers up to 3 A output current. The device features an adjustable output voltage between 800 mV and 4.5 V. It integrates power FETs and supports switching frequencies up to 2 MHz. The component functions within a junction temperature range of -40°C to +150°C and is housed in a WQFN-16 package.

Feature Summary

• Integrates high-side and low-side N-channel MOSFETs for compact design
• Supports external synchronization to an internal clock or external signal
• Includes programmable soft-start and frequency adjustment capabilities

Applications

• Portable equipment requiring efficient power conversion
• Industrial systems with single-supply requirements
• Embedded controllers and baseband processors

Procurement Notes

Verify the 'M' suffix indicates military-grade qualification or specific reliability standards compared to standard commercial variants. Confirm the RTET suffix corresponds to the correct tape-and-reel packaging configuration. Ensure compatibility with moisture sensitivity levels and reflow soldering profiles specified in the official datasheet before procurement.

Selection Notes

Select this component when applications require a wide input voltage range up to 6 V and high efficiency at moderate loads. The integrated FET design reduces external component count compared to non-integrated solutions. Consider the thermal performance of the WQFN-16 package for heat dissipation requirements in space-constrained layouts.

Part Context

This part belongs to the TPS5431x family of SWIFT converters, which are designed for high-density power applications. The TPS54318 specifically targets 3 A output requirements, distinguishing it from lower current variants like the TPS54316 or higher current models within the same series.

Replacement Considerations

Direct substitutes include TPS54318RTER for commercial grade equivalents. For pin-compatible alternatives with different current ratings, consider TPS54316 or TPS54319.