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LM2676SX-3.3/NOPB from NS,National Semiconductor

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LM2676SX-3.3/NOPB

Manufacturer: NS

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

Partnumber Manufacturer Quantity Availability
LM2676SX-3.3/NOPB,LM2676SX33NOPB NS 1500 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-3.3/NOPB is a switching voltage regulator manufactured by Texas Instruments (formerly National Semiconductor, NS).  

### **Specifications:**  
- **Output Voltage:** 3.3V (fixed)  
- **Input Voltage Range:** 8V to 40V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 260 kHz  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263-7 (DDPAK/TO-263)  
- **Regulation Type:** Step-Down (Buck)  
- **Protection Features:** Thermal shutdown, current limiting  

### **Descriptions:**  
The LM2676SX-3.3/NOPB is a monolithic high-efficiency switching regulator designed for step-down (buck) voltage conversion. It integrates a high-performance 3A DMOS switch and requires minimal external components, making it suitable for power supply applications.  

### **Features:**  
- Simple and easy-to-use design  
- Requires only 5 external components  
- Internal soft-start for controlled inrush current  
- Low power standby mode (IQ < 50 µA)  
- Adjustable output voltage version available (LM2676 adjustable)  
- High efficiency (up to 92%)  
- Thermal shutdown and current limit protection  

This regulator is commonly used in industrial, automotive, and consumer electronics applications.

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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