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LM2670SD-3.3 from NS,National Semiconductor

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LM2670SD-3.3

Manufacturer: NS

SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync

Partnumber Manufacturer Quantity Availability
LM2670SD-3.3,LM2670SD33 NS 100 In Stock

Description and Introduction

SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync The LM2670SD-3.3 is a step-down voltage regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 3.3V (fixed)  
- **Input Voltage Range:** 8V to 40V  
- **Output Current:** Up to 500mA  
- **Switching Frequency:** 260 kHz (typical)  
- **Efficiency:** Up to 90%  
- **Package:** SOIC-8 (Surface Mount)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Protection Features:** Thermal shutdown, current limiting  

### **Descriptions and Features:**  
- **Simple and Efficient:** Provides a step-down (buck) DC-DC conversion with minimal external components.  
- **Fixed Output:** Pre-set to 3.3V, eliminating the need for external feedback resistors.  
- **Low Dropout Operation:** Maintains regulation even when the input voltage is close to the output.  
- **Internal Soft-Start:** Reduces inrush current during startup.  
- **Wide Input Range:** Suitable for automotive, industrial, and battery-powered applications.  
- **Compact Design:** The SOIC-8 package is space-efficient for PCB layouts.  

This regulator is commonly used in power supply designs requiring a stable 3.3V output from higher input voltages.

Application Scenarios & Design Considerations

SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync

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