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LM2673SD-3.3 from NS,National Semiconductor

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LM2673SD-3.3

Manufacturer: NS

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

Partnumber Manufacturer Quantity Availability
LM2673SD-3.3,LM2673SD33 NS 98 In Stock

Description and Introduction

SIMPLE SWITCHER 3A Step-Down Voltage Regulator with Adjustable Current Limit The LM2673SD-3.3 is a step-down voltage regulator manufactured by National Semiconductor (NS). Here are its specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** 3.3V (fixed)  
- **Input Voltage Range:** 8V to 40V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 260 kHz  
- **Efficiency:** Up to 92%  
- **Package:** 8-Pin SOIC (SD)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Regulation Type:** Switching Regulator  

### **Descriptions:**
The LM2673SD-3.3 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 3.3V output makes it suitable for applications requiring stable power conversion from higher input voltages.

### **Features:**
- **Simple and Easy-to-Use Design**  
- **High Efficiency (Up to 92%)**  
- **3A Output Current Capability**  
- **Wide Input Voltage Range (8V to 40V)**  
- **Internal Soft-Start**  
- **Thermal Shutdown Protection**  
- **Short-Circuit Protection**  
- **Low Power Standby Mode**  
- **Requires Few External Components**  

This regulator is commonly used in power supply applications, industrial systems, automotive electronics, and battery-powered devices.

Application Scenarios & Design Considerations

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

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