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LM2679S-5.0 from NSC,National Semiconductor

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LM2679S-5.0

Manufacturer: NSC

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

Partnumber Manufacturer Quantity Availability
LM2679S-5.0,LM2679S50 NSC 6540 In Stock

Description and Introduction

SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit The LM2679S-5.0 is a switching 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 3A  
- **Switching Frequency:** 260 kHz (typical)  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263 (D2PAK)  
- **Regulation Type:** Buck (Step-Down) Converter  

### **Descriptions:**  
- The LM2679S-5.0 is a monolithic high-efficiency switching regulator designed for step-down (buck) voltage conversion.  
- It integrates a power switch, oscillator, control circuitry, and protection features in a single package.  
- Suitable for applications requiring a stable 5V output from higher input voltages.  

### **Features:**  
- **Simple Design:** Requires minimal external components.  
- **High Efficiency:** Reduces power dissipation.  
- **Internal Soft-Start:** Limits inrush current.  
- **Thermal Shutdown:** Protects against overheating.  
- **Current Limit Protection:** Prevents damage from excessive loads.  
- **Low Standby Current:** Improves efficiency in light-load conditions.  

This information is based on the manufacturer's datasheet for the LM2679S-5.0.

Application Scenarios & Design Considerations

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

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