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LM2678T-ADJ from NS进口,National Semiconductor

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LM2678T-ADJ

Manufacturer: NS进口

SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2678T-ADJ,LM2678TADJ NS进口 5090 In Stock

Description and Introduction

SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator The LM2678T-ADJ is a switching regulator manufactured by National Semiconductor (NS). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 8V to 40V  
- **Adjustable Output Voltage:** 1.21V to 37V (set via external resistors)  
- **Output Current:** Up to 5A  
- **Switching Frequency:** 260 kHz (fixed)  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package Type:** TO-220 (5-pin)  

### **Descriptions:**
- The LM2678T-ADJ is a step-down (buck) switching voltage regulator.  
- It integrates a high-efficiency DC-DC converter with a fixed-frequency PWM control scheme.  
- Designed for simplicity, it requires minimal external components.  
- Suitable for a wide range of applications, including power supplies, industrial systems, and automotive electronics.  

### **Features:**
- **Adjustable Output:** Allows flexible voltage setting via external resistors.  
- **High Efficiency:** Minimizes power loss with synchronous rectification.  
- **Built-in Protection:** Includes thermal shutdown, current limiting, and under-voltage lockout (UVLO).  
- **Low Standby Current:** Typically 50 µA in shutdown mode.  
- **Fast Transient Response:** Ensures stable output under load variations.  

This regulator is widely used in power management applications due to its reliability and performance.

Application Scenarios & Design Considerations

SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator

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