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LM2677SX-5.0 from NSC,National Semiconductor

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LM2677SX-5.0

Manufacturer: NSC

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

Partnumber Manufacturer Quantity Availability
LM2677SX-5.0,LM2677SX50 NSC 3135 In Stock

Description and Introduction

SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with Sync The LM2677SX-5.0 is a switching voltage regulator manufactured by National Semiconductor (NSC). Below are its specifications, descriptions, and features based on factual information:  

### **Specifications:**  
- **Output Voltage:** Fixed 5.0V  
- **Output Current:** Up to 5A  
- **Input Voltage Range:** 8V to 40V  
- **Switching Frequency:** 260 kHz  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263-7 (D2PAK)  
- **Regulator Type:** Step-Down (Buck) Switching Regulator  

### **Descriptions:**  
The LM2677SX-5.0 is a monolithic high-efficiency switching regulator designed for step-down (buck) voltage conversion. It integrates a power MOSFET switch and requires minimal external components, making it suitable for high-current applications.  

### **Features:**  
- **Simple and Easy-to-Use Design**  
- **Internal Soft-Start** (Reduces inrush current)  
- **Wide Input Voltage Range** (8V to 40V)  
- **High Efficiency** (Up to 92%)  
- **Fixed 5.0V Output** (No external feedback resistors needed)  
- **Thermal Shutdown and Overcurrent Protection**  
- **Low Power Standby Mode** (When disabled)  
- **Requires Only 5 External Components**  

This information is strictly based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with Sync
Partnumber Manufacturer Quantity Availability
LM2677SX-5.0,LM2677SX50 NS 4000 In Stock

Description and Introduction

SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with Sync The LM2677SX-5.0 is a switching voltage regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 5.0V (fixed)  
- **Input Voltage Range:** 8V to 40V  
- **Output Current:** Up to 5A  
- **Switching Frequency:** 260 kHz  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263-7 (D2PAK)  

### **Descriptions:**  
- A **step-down (buck) switching regulator** designed for high-efficiency power conversion.  
- Integrates a **high-side N-channel MOSFET** for reduced external component count.  
- Features **thermal shutdown and current limiting** for protection.  

### **Features:**  
- **Simple and Easy-to-Use:** Requires minimal external components.  
- **Fixed Output Voltage:** Eliminates the need for feedback resistors.  
- **Wide Input Voltage Range:** Suitable for various applications.  
- **High Efficiency:** Reduces power dissipation.  
- **Internal Soft-Start:** Limits inrush current during startup.  
- **Low Power Standby Mode:** Enhances efficiency at light loads.  

This regulator is commonly used in **power supplies, industrial systems, automotive applications, and battery-powered devices**.

Application Scenarios & Design Considerations

SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with Sync
Partnumber Manufacturer Quantity Availability
LM2677SX-5.0,LM2677SX50 NS,NS 1500 In Stock

Description and Introduction

SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with Sync The LM2677SX-5.0 is a step-down voltage regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 5.0V (fixed)  
- **Input Voltage Range:** 8V to 40V  
- **Output Current:** Up to 5A  
- **Switching Frequency:** 260 kHz (typical)  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263-7 (D2PAK)  
- **Regulation Type:** Switching Regulator  
- **Protection Features:** Thermal shutdown, current limiting  

### **Descriptions and Features:**  
- Simple and easy-to-use buck (step-down) switching regulator.  
- Requires minimal external components for operation.  
- Includes a high-efficiency internal NPN switch.  
- Fixed-frequency oscillator for predictable noise performance.  
- Soft-start feature to reduce inrush current.  
- Suitable for battery-powered and industrial applications.  
- Adjustable version available (LM2677-ADJ) for custom output voltages.  

This regulator is designed for power supply applications requiring high efficiency and compact design.

Application Scenarios & Design Considerations

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

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