LM2679SX-12 - Texas Instruments

Manufacturer Part Number

LM2679SX-12

Manufacturer

Texas Instruments

Introduction

The LM2679SX-12 is a SIMPLE SWITCHER® step-down voltage regulator that provides all of the active functions for a buck (step-down) switching regulator, capable of driving a 5A load with excellent line and load regulation.

Product Features and Performance

Step-Down Regulator with positive output configuration

Buck Topology

Fixed Output Voltage of 12V

Output Current capacity of 5A

Switching Frequency of 260kHz

Non-Synchronous Rectifier

Thermal Shutdown and Current Limit Protection

High Efficiency

Product Advantages

Simple and easy to design with, requiring minimal external components

High efficiency reduces the need for heat sinking

Thermal shutdown and current limit for added safety

52V transient protection

Self-contained soft-start for reducing inrush current

Key Technical Parameters

Voltage - Input (Min): 8V

Voltage - Input (Max): 40V

Voltage - Output (Min/Fixed): 12V

Current - Output: 5A

Frequency - Switching: 260kHz

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

Quality and Safety Features

Built-In Thermal Shutdown

Current Limiting

Over Temperature Protection

Compatibility

Compatible with various capacitors and inductors for design flexibility

Usable in high voltage operation systems up to 40V

Application Areas

Computer Systems

Consumer Electronics

Industrial Power Systems

Telecommunications Infrastructure

Product Lifecycle

Obsolete - Not recommended for new designs

Replacements or upgrades may be available

Several Key Reasons to Choose This Product

Reliable performance with fixed 12V output and up to 5A output current

Operates over a wide input range of 8V to 40V suitable for multiple applications

Easy to use with straightforward circuit integration

Provides built-in protection features enhancing system safety

Texas Instruments quality and support for Power Management Integrated Circuits (PMIC)