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LM2677SD-3.3 from NS,National Semiconductor

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LM2677SD-3.3

Manufacturer: NS

SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with Sync

Partnumber Manufacturer Quantity Availability
LM2677SD-3.3,LM2677SD33 NS 198 In Stock

Description and Introduction

SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with Sync The LM2677SD-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 5A  
- **Switching Frequency:** 260 kHz (typical)  
- **Efficiency:** Up to 92%  
- **Package:** SOIC-8 (SD)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Protection Features:** Thermal shutdown, current limiting  

### **Descriptions:**  
The LM2677SD-3.3 is a monolithic integrated circuit that provides all active functions for a step-down (buck) switching regulator. It is designed for high efficiency and requires minimal external components.  

### **Features:**  
- Simple and easy-to-use design  
- Requires only 5 external components  
- Low standby current (50 µA typical)  
- Soft-start capability  
- Adjustable version available (LM2677)  
- Internal frequency compensation  
- High efficiency across load range  

This regulator is suitable for power supply applications requiring high current and efficiency.

Application Scenarios & Design Considerations

SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with Sync

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