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LM2677T-ADJ from NS,National Semiconductor

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LM2677T-ADJ

Manufacturer: NS

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

Partnumber Manufacturer Quantity Availability
LM2677T-ADJ,LM2677TADJ NS 6000 In Stock

Description and Introduction

SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with Sync The LM2677T-ADJ is a step-down voltage regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Input Voltage Range:** 8V to 40V  
- **Adjustable Output Voltage:** 1.21V to 37V  
- **Output Current:** Up to 5A  
- **Switching Frequency:** 260 kHz (fixed)  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-220 (5-pin)  
- **Protection Features:** Thermal shutdown, current limit  

### **Descriptions:**  
The LM2677T-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 and requires 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 92%)  
- Requires only 5 external components  
- Internal soft-start for reduced inrush current  
- Wide input voltage range (8V to 40V)  
- Adjustable output voltage (1.21V to 37V)  
- Fixed-frequency operation (260 kHz)  
- Thermal shutdown and current limit protection  

This regulator is suitable for applications such as power supplies, industrial controls, and automotive systems.

Application Scenarios & Design Considerations

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

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