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LM2676SX-ADJ/NOPB from NSC,National Semiconductor

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LM2676SX-ADJ/NOPB

Manufacturer: NSC

SIMPLE SWITCHER? 8V to 40V, 3A Low Component Count Step-Down Regulator 7-DDPAK/TO-263 -40 to 125

Partnumber Manufacturer Quantity Availability
LM2676SX-ADJ/NOPB,LM2676SXADJNOPB NSC 119 In Stock

Description and Introduction

SIMPLE SWITCHER? 8V to 40V, 3A Low Component Count Step-Down Regulator 7-DDPAK/TO-263 -40 to 125 The LM2676SX-ADJ/NOPB is a switching voltage regulator manufactured by National Semiconductor (NSC). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 8V to 40V  
- **Output Voltage Range:** Adjustable (1.23V to 37V)  
- **Output Current:** 3A  
- **Switching Frequency:** 260 kHz (typical)  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263-7 (D2PAK)  

### **Descriptions:**
- The LM2676SX-ADJ/NOPB is a step-down (buck) switching regulator with an adjustable output voltage.  
- It integrates a high-efficiency DC-DC converter with a fixed-frequency PWM control scheme.  
- Designed for simplicity and minimal external components, it includes built-in soft-start and thermal shutdown protection.  

### **Features:**
- **Adjustable Output Voltage** via external resistors  
- **3A Output Current** capability  
- **Wide Input Voltage Range** (8V to 40V)  
- **High Efficiency** (up to 92%)  
- **Fixed-Frequency Operation** (260 kHz)  
- **Built-in Soft-Start** to reduce inrush current  
- **Thermal Shutdown Protection**  
- **Short-Circuit Protection**  
- **Low Power Standby Mode**  

This regulator is commonly used in power supply applications, automotive systems, and industrial equipment.

Application Scenarios & Design Considerations

SIMPLE SWITCHER? 8V to 40V, 3A Low Component Count Step-Down Regulator 7-DDPAK/TO-263 -40 to 125

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