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LM2679SD-5.0 from NSC,National Semiconductor

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LM2679SD-5.0

Manufacturer: NSC

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

Partnumber Manufacturer Quantity Availability
LM2679SD-5.0,LM2679SD50 NSC 14 In Stock

Description and Introduction

SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit The LM2679SD-5.0 is a step-down voltage regulator manufactured by National Semiconductor (NSC). Below are its specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** 5.0V (fixed)  
- **Input Voltage Range:** 8V to 40V  
- **Output Current:** Up to 5A  
- **Switching Frequency:** 260 kHz (typical)  
- **Efficiency:** Up to 92%  
- **Package:** 7-Lead LLP (Leadless Leadframe Package)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Protection Features:** Thermal shutdown, current limit  

### **Descriptions:**
The LM2679SD-5.0 is a monolithic high-efficiency switching regulator designed for step-down (buck) applications. It integrates a power MOSFET switch and offers a simple, efficient solution for converting higher input voltages to a stable 5.0V output.  

### **Features:**
- **High Efficiency:** Up to 92% efficiency reduces heat dissipation.  
- **Simple Design:** Requires minimal external components.  
- **Internal Soft-Start:** Reduces inrush current.  
- **Wide Input Voltage Range:** 8V to 40V input range.  
- **Fixed Output Voltage:** 5.0V preset output.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Current Limiting:** Protects the device from excessive load currents.  

This regulator is commonly used in power supply applications for industrial, automotive, and consumer electronics.

Application Scenarios & Design Considerations

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

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