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LM27402SQ from NS,National Semiconductor

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LM27402SQ

Manufacturer: NS

High Performance Synchronous Buck Controller with DCR Current Sensing

Partnumber Manufacturer Quantity Availability
LM27402SQ NS 205 In Stock

Description and Introduction

High Performance Synchronous Buck Controller with DCR Current Sensing The LM27402SQ is a synchronous buck regulator manufactured by Texas Instruments (NS). Here are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 4.5V to 20V  
- **Output Voltage Range:** 0.8V to 5.5V  
- **Output Current:** Up to 6A  
- **Switching Frequency:** Adjustable (300kHz to 1MHz)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-Pin WQFN  

### **Descriptions:**
- The LM27402SQ is a high-efficiency, synchronous step-down DC-DC converter.  
- It integrates MOSFET drivers and is optimized for high-performance power supply applications.  
- Features include adjustable soft-start, precision enable, and power-good indication.  

### **Features:**
- **Integrated MOSFET Drivers** – Reduces external component count.  
- **Adjustable Frequency** – Allows optimization for efficiency or size.  
- **Precision Reference (0.8V ±1%)** – Ensures accurate output voltage regulation.  
- **Power-Good Indicator** – Monitors output voltage status.  
- **Adjustable Soft-Start** – Controls inrush current during startup.  
- **Overcurrent & Thermal Protection** – Enhances system reliability.  
- **Synchronous Rectification** – Improves efficiency compared to diode-based designs.  

This regulator is commonly used in networking, telecom, and industrial applications.

Application Scenarios & Design Considerations

High Performance Synchronous Buck Controller with DCR Current Sensing

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