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LM2673-S-5.0 from NS,National Semiconductor

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LM2673-S-5.0

Manufacturer: NS

SIMPLE SWITCHER 3A Step-Down Voltage Regulator with Adjustable Current Limit

Partnumber Manufacturer Quantity Availability
LM2673-S-5.0,LM2673S50 NS 7 In Stock

Description and Introduction

SIMPLE SWITCHER 3A Step-Down Voltage Regulator with Adjustable Current Limit The LM2673-S-5.0 is a switching voltage regulator manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features based on factual information:

### **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 Type:** TO-263 (D2PAK)  
- **Regulation Type:** Step-down (buck) converter  

### **Descriptions:**  
The LM2673-S-5.0 is a monolithic integrated circuit that provides all necessary functions for a step-down (buck) switching regulator. It is designed for high efficiency and simplicity, requiring minimal external components. The fixed 5.0V output version eliminates the need for external resistors to set the output voltage.  

### **Features:**  
- **Simple and Easy-to-Use Design:** Requires only 6 external components.  
- **High Efficiency:** Up to 92% efficiency with internal MOSFET switch.  
- **Wide Input Voltage Range:** Operates from 8V to 40V.  
- **Fixed Frequency Operation:** 260 kHz switching frequency reduces noise and simplifies filtering.  
- **Thermal Shutdown and Current Limit Protection:** Built-in safeguards for overcurrent and overtemperature conditions.  
- **Low Power Standby Mode:** Consumes minimal current when disabled.  
- **TO-263 Package:** Suitable for high-power applications with good thermal performance.  

This information is based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

SIMPLE SWITCHER 3A Step-Down Voltage Regulator with Adjustable Current Limit

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