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LM3743MMX-300 from NSC,National Semiconductor

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LM3743MMX-300

Manufacturer: NSC

High-Performance Synchronous Buck Controller with Comprehensive Fault Protection Features

Partnumber Manufacturer Quantity Availability
LM3743MMX-300,LM3743MMX300 NSC 2096 In Stock

Description and Introduction

High-Performance Synchronous Buck Controller with Comprehensive Fault Protection Features The LM3743MMX-300 is a step-down DC-DC converter manufactured by National Semiconductor (NSC). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage:** Adjustable (0.6V to VIN)  
- **Output Current:** Up to 300mA  
- **Switching Frequency:** 1.5MHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin VSSOP (MSOP)  

### **Descriptions:**
- The LM3743MMX-300 is a synchronous buck regulator designed for low-power applications.  
- It integrates both high-side and low-side MOSFETs for efficient power conversion.  
- Suitable for battery-powered devices, portable electronics, and point-of-load regulation.  

### **Features:**  
- **Synchronous Rectification:** Improves efficiency by reducing power loss.  
- **PWM/PFM Mode:** Auto-switching for optimal efficiency at light and heavy loads.  
- **Soft-Start:** Prevents inrush current during startup.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation within input voltage range.  
- **Thermal Shutdown:** Protects the device from overheating.  
- **Small Footprint:** Compact MSOP-8 package for space-constrained designs.  

This information is based solely on the manufacturer's datasheet. For detailed application notes or design considerations, refer to the official NSC documentation.

Application Scenarios & Design Considerations

High-Performance Synchronous Buck Controller with Comprehensive Fault Protection Features

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