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LM27402SQ/NOPB from NSC,National Semiconductor

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LM27402SQ/NOPB

Manufacturer: NSC

3-20V, Voltage Mode Synchronous Buck Controller with DCR Current Sensing 16-WQFN -40 to 125

Partnumber Manufacturer Quantity Availability
LM27402SQ/NOPB,LM27402SQNOPB NSC 20000 In Stock

Description and Introduction

3-20V, Voltage Mode Synchronous Buck Controller with DCR Current Sensing 16-WQFN -40 to 125 The LM27402SQ/NOPB is a synchronous buck regulator manufactured by National Semiconductor (NSC).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 20V  
- **Output Voltage Range:** 0.6V to 5.5V  
- **Output Current:** Up to 2A  
- **Switching Frequency:** Adjustable from 300kHz to 1MHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** WSON-10 (3mm x 3mm)  

### **Descriptions:**  
The LM27402SQ/NOPB is a high-efficiency, synchronous step-down DC-DC converter designed for applications requiring precise voltage regulation. It integrates high-side and low-side MOSFETs, reducing external component count. The device supports adjustable switching frequency and includes features like soft-start, overcurrent protection, and thermal shutdown.  

### **Features:**  
- **Integrated MOSFETs:** Reduces external component requirements.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **Programmable Soft-Start:** Prevents inrush current.  
- **Overcurrent Protection:** Prevents damage during faults.  
- **Thermal Shutdown:** Protects against overheating.  
- **Synchronous Rectification:** Improves efficiency.  
- **Low Quiescent Current:** Enhances light-load efficiency.  

This regulator is suitable for applications such as point-of-load power supplies, networking equipment, and industrial systems.

Application Scenarios & Design Considerations

3-20V, Voltage Mode Synchronous Buck Controller with DCR Current Sensing 16-WQFN -40 to 125

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