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LM2673S-12/NOPB from NS,National Semiconductor

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LM2673S-12/NOPB

Manufacturer: NS

3A Step-Down Voltage Regulator with Adjustable Current Limit 7-DDPAK/TO-263 -40 to 125

Partnumber Manufacturer Quantity Availability
LM2673S-12/NOPB,LM2673S12NOPB NS 945 In Stock

Description and Introduction

3A Step-Down Voltage Regulator with Adjustable Current Limit 7-DDPAK/TO-263 -40 to 125 The LM2673S-12/NOPB is a step-down voltage regulator manufactured by Texas Instruments (NS). Here are its key specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** Fixed 12V  
- **Input Voltage Range:** 8V to 40V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 260 kHz (typical)  
- **Efficiency:** Up to 92%  
- **Operating Junction Temperature:** -40°C to +125°C  
- **Package:** TO-263-7 (D2PAK)  

### **Descriptions:**
- The LM2673S-12/NOPB is a monolithic high-efficiency switching regulator with a fixed 12V output.  
- It integrates a 3A NPN switch and features thermal shutdown, current limiting, and an under-voltage lockout.  
- Designed for step-down (buck) converter applications, it simplifies power supply design with minimal external components.  

### **Features:**
- **Simple Design:** Requires only 5 external components.  
- **High Efficiency:** Up to 92% efficiency with internal switch optimization.  
- **Internal Soft-Start:** Reduces inrush current during startup.  
- **Thermal Shutdown & Current Limit:** Protects the device from overheating and overcurrent conditions.  
- **Wide Input Voltage Range:** Supports 8V to 40V input.  
- **Fixed Frequency Operation:** 260 kHz switching for stable performance.  

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

Application Scenarios & Design Considerations

3A Step-Down Voltage Regulator with Adjustable Current Limit 7-DDPAK/TO-263 -40 to 125

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