TPS54331DDAR

3 A Output, 3.5 V-28 V Input Wide-Range Non-Synchronous Buck Converter｜570 kHz Fixed Switching Frequency｜Eco-Mode Light-Load Efficiency｜SOIC-8 Package.

Product Description

Product Overview

The TPS54331DDAR from TI is a wide-input-range (up to 28 V) step-down (buck) DC/DC converter capable of delivering up to 3 A output current. It integrates a high-side MOSFET and uses current-mode control with a fixed 570 kHz switching frequency, simplifying compensation and enabling low-cost ceramic output capacitors.

It features Eco-Mode™ pulse-skipping for high light-load efficiency and has a shutdown quiescent current of typically 1 µA, making it suitable even for battery-powered systems. Comprehensive protections include programmable undervoltage lockout (UVLO), overvoltage transient protection, cycle-by-cycle current limiting, thermal shutdown and more.

Key Features

Input voltage range: 3.5 V to 28 V (with higher transient capability)
Adjustable output down to ~0.8 V
Integrated high-side MOSFET (typical 80 mΩ R<sub>DS(on)</sub>) supports up to 3 A continuous output
Fixed switching frequency 570 kHz
Eco-Mode™ for high efficiency at light load
Ultra-low shutdown quiescent current (~1 µA typical)
Programmable undervoltage lockout (UVLO), overvoltage transient protection, thermal shutdown, frequency fold-back, cycle-by-cycle current limit
Package: SOIC-8 or PowerPAD™ with enhanced thermal performance
Operating junction temperature: -40 °C to +150 °C

Applications

Distributed power systems (5 V, 12 V, 24 V rails)
Consumer electronics (set-top boxes, displays, peripherals, battery chargers)
Industrial and automotive audio power supplies
Battery-powered or portable devices requiring high-input to low-voltage conversion with high current
Networking and communication equipment where high input voltage and 3 A output are needed

Key Specifications

Parameter	Specification
Brand	Texas Instruments (TI)
Part Number	TPS54331DDAR
Function	Asynchronous buck converter
Input Voltage	3.5 V – 28 V
Output Voltage	Adjustable from 0.8 V
Output Current	3 A
Switching Freq.	570 kHz (fixed)
Shutdown Iq	~1 µA
Light-Load Mode	Eco-Mode™ Pulse Jump
Package	SOIC-8 / PowerPAD™ 8
Operating Temp.	-40 °C to +150 °C

RFQ & Support

Jaron supplies genuine TI TPS54331DDAR with global inventory and full technical support.
Please include quantity, target price, ETA, and application details in your RFQ.
We provide BOM kitting, EOL replacement evaluation, cost-optimization services, and worldwide sourcing support.

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