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LM2679SX-ADJ from NS,National Semiconductor

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LM2679SX-ADJ

Manufacturer: NS

SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit

Partnumber Manufacturer Quantity Availability
LM2679SX-ADJ,LM2679SXADJ NS 16696 In Stock

Description and Introduction

SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit The LM2679SX-ADJ is a switching regulator manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**
- **Input Voltage Range:** 8V to 40V  
- **Adjustable Output Voltage Range:** 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-263 (D2PAK-7)  

### **Descriptions:**
- The LM2679SX-ADJ is a step-down (buck) switching voltage regulator.  
- It provides high efficiency with minimal external components.  
- The adjustable output voltage is set using an external resistor divider.  
- Includes built-in thermal shutdown and current limit protection.  

### **Features:**
- **Simple and Easy-to-Use:** Requires only a few external components.  
- **High Efficiency:** Reduces power dissipation.  
- **Internal Soft-Start:** Limits inrush current during startup.  
- **Frequency Compensation:** Internal compensation simplifies design.  
- **Protection Features:** Thermal shutdown and current limit protection.  
- **Low Power Standby Mode:** Reduces power consumption when disabled.  

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

Application Scenarios & Design Considerations

SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit
Partnumber Manufacturer Quantity Availability
LM2679SX-ADJ,LM2679SXADJ NATIONALSEMI 5000 In Stock

Description and Introduction

SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit The LM2679SX-ADJ is a switching voltage regulator manufactured by National Semiconductor (now part of Texas Instruments). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** National Semiconductor (NATIONALSEMI)  
- **Type:** Step-Down (Buck) Switching Regulator  
- **Output Voltage:** Adjustable (1.23V to 37V)  
- **Output Current:** Up to 3A  
- **Input Voltage Range:** 8V to 40V  
- **Switching Frequency:** 260 kHz (fixed)  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263-7 (SMD)  

### **Descriptions:**
The LM2679SX-ADJ is a high-efficiency, adjustable-output switching regulator designed for step-down voltage conversion. It integrates a high-side N-channel MOSFET switch, simplifying circuit design while delivering high efficiency. The adjustable output voltage is set using an external resistor divider.  

### **Features:**
- **Adjustable Output Voltage** (1.23V to 37V)  
- **3A Output Current Capability**  
- **Wide Input Voltage Range (8V to 40V)**  
- **High Efficiency (up to 92%)**  
- **Fixed 260 kHz Switching Frequency**  
- **Integrated N-Channel MOSFET Switch**  
- **Thermal Shutdown Protection**  
- **Soft-Start Functionality**  
- **Low Power Standby Mode**  
- **TO-263-7 Package (Surface Mount)**  

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

Application Scenarios & Design Considerations

SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit

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