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LM2676S-3.3 from NS,National Semiconductor

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LM2676S-3.3

Manufacturer: NS

SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2676S-3.3,LM2676S33 NS 1000 In Stock

Description and Introduction

SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator The LM2676S-3.3 is a switching voltage regulator manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**
- **Output Voltage:** 3.3V (fixed)  
- **Input Voltage Range:** 8V to 40V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 260 kHz (typical)  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263 (D2PAK)  
- **Regulation Type:** Step-down (Buck)  

### **Descriptions:**
The LM2676S-3.3 is a monolithic integrated circuit designed for step-down (buck) voltage regulation. It provides a fixed 3.3V output from an input voltage range of 8V to 40V, making it suitable for various power supply applications. The device integrates a high-efficiency switching regulator with a minimal number of external components, simplifying design and reducing board space.

### **Features:**
- **Simple and Efficient Design:** Requires only a few external components.  
- **Internal Soft-Start:** Reduces inrush current during startup.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Current Limiting and Short-Circuit Protection:** Enhances reliability.  
- **Low Power Standby Mode:** Improves efficiency in light-load conditions.  
- **Wide Input Voltage Range:** Supports 8V to 40V input.  
- **High Efficiency:** Up to 92% efficiency, reducing power dissipation.  

This information is strictly factual and derived from the manufacturer's datasheet.

Application Scenarios & Design Considerations

SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator
Partnumber Manufacturer Quantity Availability
LM2676S-3.3,LM2676S33 NSC 135 In Stock

Description and Introduction

SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator The LM2676S-3.3 is a step-down voltage regulator manufactured by National Semiconductor (NSC). Here are its key specifications, descriptions, and features:

### **Specifications:**  
- **Output Voltage:** 3.3V (fixed)  
- **Input Voltage Range:** 8V to 40V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 260 kHz (typical)  
- **Efficiency:** Up to 92%  
- **Operating Junction Temperature Range:** -40°C to +125°C  
- **Package:** TO-263 (D2PAK)  

### **Descriptions:**  
- The LM2676S-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 power conversion with minimal external components.  
- The device includes a fixed-frequency oscillator, high-side switch, thermal shutdown, and current limit protection.  

### **Features:**  
- **Simple and Easy-to-Use:** Requires few external components.  
- **High Efficiency:** Up to 92% efficiency with internal switch optimization.  
- **Internal Soft-Start:** Reduces inrush current during startup.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Current Limit Protection:** Safeguards against excessive load currents.  
- **Fixed-Frequency Operation:** Ensures predictable noise characteristics.  

This information is based solely on the manufacturer's datasheet for the LM2676S-3.3.

Application Scenarios & Design Considerations

SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator
Partnumber Manufacturer Quantity Availability
LM2676S-3.3,LM2676S33 NS,NS 135 In Stock

Description and Introduction

SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator The LM2676S-3.3 is a switching voltage regulator manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features:  

### **Specifications:**  
- **Output Voltage:** 3.3V (fixed)  
- **Input Voltage Range:** 8V to 40V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 260 kHz (typical)  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263 (D2PAK)  
- **Regulation Type:** Buck (Step-Down) Converter  

### **Descriptions:**  
- The LM2676S-3.3 is a monolithic integrated circuit designed for step-down (buck) voltage regulation.  
- It provides a fixed 3.3V output with high efficiency and minimal external components.  
- It includes an internal NPN switch, frequency compensation, and thermal shutdown protection.  

### **Features:**  
- **Simple Design:** Requires few external components.  
- **High Efficiency:** Up to 92% due to low dropout operation.  
- **Internal Soft-Start:** Reduces inrush current.  
- **Thermal Shutdown Protection:** Prevents overheating.  
- **Current Limiting:** Protects against overloads.  
- **Fixed Frequency Operation:** 260 kHz switching for stable performance.  

This information is based on the manufacturer's datasheet for the LM2676S-3.3 by National Semiconductor (NS).

Application Scenarios & Design Considerations

SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator

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