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LM2676T-5.0 from NS,National Semiconductor

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LM2676T-5.0

Manufacturer: NS

SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2676T-5.0,LM2676T50 NS 1500 In Stock

Description and Introduction

SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator The LM2676T-5.0 is a step-down voltage regulator manufactured by National Semiconductor (NS).  

### **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-220 (5-pin)  
- **Regulation Type:** Switching Regulator (Buck Converter)  

### **Descriptions and Features:**  
- Simple and easy-to-use buck regulator with minimal external components.  
- Includes an internal N-channel MOSFET switch for high efficiency.  
- Fixed-frequency PWM control for stable operation.  
- Built-in thermal shutdown and current limit protection.  
- Soft-start feature to reduce inrush current.  
- Low standby current in shutdown mode.  
- Suitable for industrial, automotive, and consumer applications.  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator

Alternative Part Number

  • TPS5450DDA --: 5A step-down converter with fixed 5V output in a similar power class; widely available and pin-compatible in function, though package differs.
  • LT1076CT-5 --: 5V fixed-output step-down switching regulator with comparable current capability and TO-220 package, suitable as a functional replacement.
  • MC34063AP1 --: Versatile adjustable step-down/inverting regulator that can be configured for 5V output; lower current but a common low-cost fallback for less demanding loads.

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