LM2678SX-3.3 - Texas Instruments

Manufacturer Part Number

LM2678SX-3.3

Manufacturer

Texas Instruments

Introduction

LM2678SX-3.3 is a part of Texas Instruments' SIMPLE SWITCHER® series, a step-down voltage regulator optimized for power management applications.

Product Features and Performance

SIMPLE SWITCHER® step-down voltage regulator

Fixed output voltage of 3.3V

High-efficiency buck topology

Output current capacity of 5A

Input voltage range from 8V to 40V

Switching frequency of 260kHz

Non-synchronous rectification

Thermal shutdown and current limit protection

Product Advantages

Suitable for various applications due to a wide input voltage range

Fixed output simplifies design

Capable of delivering a significant amount of current (5A)

Over-temperature and over-current protection enhance reliability

Easy-to-use with a minimal number of external components

Key Technical Parameters

Function: Step-Down (Buck)

Output Type: Fixed at 3.3V

Number of Outputs: 1

Voltage Input (Min): 8V

Voltage Input (Max): 40V

Current Output: 5A

Frequency Switching: 260kHz

Operating Temperature: -40°C to 125°C (TJ)

Quality and Safety Features

Built-in protection mechanisms against over-temperature

Current limit feature for safety

Robust thermal performance with a maximum junction temperature of 125°C

Compatibility

Surface mount technology compatible with TO-263-8, D2PAK (7 Leads + Tab), TO-263CA package

Compatible with a broad range of input voltages for various applications

Application Areas

Industrial power supplies

Automotive systems

Networking equipment

Telecommunications

Product Lifecycle

Obsolete status

Replacement or upgrade options should be consulted with Texas Instruments for current alternatives

Several Key Reasons to Choose This Product

High reliability and built-in safety features ensure long-term performance

The SIMPLE SWITCHER® series is known for ease of use and speed of design

Broad application scope due to flexible input voltage range and significant output current

Texas Instruments is a reputable manufacturer for power management solutions

Despite obsolescence, may still be suitable for legacy systems or non-critical applications where newer alternatives are not necessary