LM2678SD-3.3 - Texas Instruments

Manufacturer Part Number

LM2678SD-3.3

Manufacturer

Texas Instruments

Introduction

LM2678SD-3.3 is a step-down (buck) switching regulator designed to efficiently reduce higher input voltages to a fixed lower output voltage.

Product Features and Performance

High-efficiency step-down voltage regulation

Fixed output voltage of 3.3V

Maximum output current of 5A

Supports input voltage range from 8V to 40V

Switching frequency of 260kHz

Operates over a temperature range of -40°C to 125°C

Product Advantages

Compact 14-VDFN exposed pad package enhances thermal performance

Simple integration with minimal external components required

Offers thermal shutdown and current limit protections

Key Technical Parameters

Input Voltage: 8V to 40V

Output Voltage: 3.3V

Output Current: 5A

Switching Frequency: 260kHz

Operating Temperature: -40°C to 125°C

Quality and Safety Features

Thermal shutdown

Current limiting protection

Robust construction for resilient performance in varying temperatures

Compatibility

Compatible with various applications requiring a 3.3V fixed output up to 5A from input voltages between 8V and 40V

Application Areas

Industrial power systems

Networking infrastructure

Telecommunications equipment

Product Lifecycle

Obsolete status—no longer being produced by Texas Instruments

Potential replacements or upgrades should be considered by consulting newer models or Texas Instruments support

Several Key Reasons to Choose This Product

Delivers stable 3.3V output efficiently from a broad range of input sources

Robust thermal and current-limiting safeguards help to enhance device reliability

Suitable for a variety of applications across multiple industries due to flexible input voltage range and significant output current capacity

Streamlined integration enabled by the SIMPLE SWITCHER® series' design ethos, aiming to simplify power supply design