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LM2674N-12 from NS,National Semiconductor

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LM2674N-12

Manufacturer: NS

SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2674N-12,LM2674N12 NS 2 In Stock

Description and Introduction

SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage Regulator The LM2674N-12 is a step-down voltage regulator manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** Fixed 12V  
- **Input Voltage Range:** 8V to 40V  
- **Output Current:** Up to 500mA  
- **Switching Frequency:** 260 kHz (typical)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 8-Pin DIP (Dual In-line Package)  

### **Descriptions:**
- The LM2674N-12 is a monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator.  
- It is designed for easy implementation with minimal external components.  
- Includes built-in frequency compensation and a fixed-frequency oscillator.  

### **Features:**
- **Simple and Efficient Design:** Requires only 5 external components.  
- **Internal Soft-Start:** Reduces inrush current during startup.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Current Limiting Protection:** Safeguards against overcurrent conditions.  
- **Low Power Standby Mode:** Enhances efficiency in light-load conditions.  

This information is based on the manufacturer's datasheet. For detailed electrical characteristics and application circuits, refer to the official documentation.

Application Scenarios & Design Considerations

SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage Regulator

Alternative Part Number

  • TPS5420D --: Wide-input 2A step-down converter in SOIC-8 that can be configured for 12V output, offering higher current capability and a different series/prefix from the source.
  • MC34063AP --: Classic general-purpose DC-DC switching regulator in DIP-8 that can be set to 12V output with external feedback, widely available and pin-compatible in through-hole designs.
  • L5973D --: 2A step-down switching regulator in SOIC-8 with adjustable output that can be set to 12V, providing a distinct series alternative for similar buck applications.

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