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LM2671LD-ADJ from NS,National Semiconductor

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LM2671LD-ADJ

Manufacturer: NS

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

Partnumber Manufacturer Quantity Availability
LM2671LD-ADJ,LM2671LDADJ NS 775 In Stock

Description and Introduction

SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage Regulator with Features The LM2671LD-ADJ is a switching voltage regulator manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**
- **Input Voltage Range:** 8V to 40V  
- **Adjustable Output Voltage Range:** 1.21V to 37V  
- **Output Current:** Up to 500mA  
- **Switching Frequency:** 260 kHz (fixed)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 8-Pin SOIC (LD)  

### **Descriptions:**
The LM2671LD-ADJ is a step-down (buck) switching regulator designed for high-efficiency voltage conversion. It integrates a power switch, oscillator, control circuitry, and protection features in a compact package. The adjustable output version allows users to set the desired voltage using external resistors.

### **Features:**
- **Simple Adjustable Output:** Uses two external resistors to set the output voltage.  
- **High Efficiency:** Minimizes power dissipation with synchronous rectification.  
- **Internal Soft-Start:** Reduces inrush current during startup.  
- **Thermal Shutdown & Current Limiting:** Protects against overheating and overcurrent.  
- **Low Standby Current:** Typically 50 µA in shutdown mode.  
- **Wide Input Voltage Range:** Suitable for automotive and industrial applications.  

This regulator is commonly used in power supplies, battery chargers, and DC-DC converter applications.  

(Note: National Semiconductor (NS) was acquired by Texas Instruments in 2011, but the original part numbering and specifications remain valid.)

Application Scenarios & Design Considerations

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

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