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LM2679 from NS,National Semiconductor

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LM2679

Manufacturer: NS

SIMPLE SWITCHER ?5A Step-Down Voltage Regulator with Adjustable Current Limit

Partnumber Manufacturer Quantity Availability
LM2679 NS 100 In Stock

Description and Introduction

SIMPLE SWITCHER ?5A Step-Down Voltage Regulator with Adjustable Current Limit The LM2679 is a switching regulator manufactured by National Semiconductor (NS). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Input Voltage Range:** 8V to 40V  
- **Output Voltage Options:** Adjustable (3.3V, 5V, 12V fixed versions also available)  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 260 kHz (typical)  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package Type:** TO-220, TO-263 (D2PAK)  

### **Descriptions:**
- The LM2679 is a **step-down (buck) switching regulator** designed for high-efficiency voltage conversion.  
- It integrates a **high-current switch**, **oscillator**, and **control circuitry** in a single package.  
- Suitable for **battery-powered applications**, **distributed power systems**, and **automotive uses**.  
- Includes **thermal shutdown** and **current limiting** for protection.  

### **Features:**
- **Simple and Easy-to-Use:** Requires minimal external components.  
- **Fixed and Adjustable Output Options:** Versatile for different applications.  
- **High Efficiency:** Reduces power dissipation.  
- **Internal Soft-Start:** Limits inrush current.  
- **Wide Input Voltage Range:** Supports various power sources.  
- **Low Standby Current:** Enhances power-saving performance.  

This information is based on the manufacturer's datasheet for the LM2679.

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