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LM2675N-ADJ from NSC,National Semiconductor

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LM2675N-ADJ

Manufacturer: NSC, NS

SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2675N-ADJ,LM2675NADJ NSC, NS 68 In Stock

Description and Introduction

SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator The LM2675N-ADJ is a switching voltage regulator manufactured by National Semiconductor (NSC). Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**
- **Input Voltage Range:** 8V to 40V  
- **Adjustable Output Voltage Range:** 1.23V to 37V (set by external resistors)  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 260 kHz (fixed)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-220 (5-pin)  
- **Regulation Type:** Buck (Step-Down) Converter  

### **Descriptions:**
The LM2675N-ADJ is a monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator. It is designed for high-efficiency power conversion with minimal external components. The adjustable version allows the output voltage to be set using external resistors.

### **Features:**
- **Simple and Easy-to-Use Design**  
- **High Efficiency (Up to 90%)**  
- **Internal Soft-Start** (Reduces inrush current)  
- **Wide Input Voltage Range (8V to 40V)**  
- **Adjustable Output Voltage (1.23V to 37V)**  
- **Fixed Frequency Operation (260 kHz)**  
- **Thermal Shutdown and Current Limit Protection**  
- **Requires Few External Components**  
- **TO-220 Package for Easy Mounting**  

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

Application Scenarios & Design Considerations

SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator

Alternative Part Number

  • LM2596T-ADJ --: Simple switcher step-down regulator with adjustable output, similar buck topology and current capability, widely available and pin-compatible in function.
  • MC34063A --: Versatile adjustable DC-DC switching regulator that can be configured as a buck converter, low cost and commonly used as a substitute in similar applications.
  • L5973D --: Adjustable step-down switching regulator with comparable input voltage range and output current, suitable as a functional replacement.
  • L4978 --: Adjustable step-down switching regulator with comparable input range and output current, suitable as an alternative buck converter solution.

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