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LM3743MM-300 from NSC,National Semiconductor

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LM3743MM-300

Manufacturer: NSC

High-Performance Synchronous Buck Controller with Comprehensive Fault Protection Features

Partnumber Manufacturer Quantity Availability
LM3743MM-300,LM3743MM300 NSC 2096 In Stock

Description and Introduction

High-Performance Synchronous Buck Controller with Comprehensive Fault Protection Features The LM3743MM-300 is a step-down DC-DC converter manufactured by National Semiconductor (NSC).  

**Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage:** Adjustable (0.8V to VIN)  
- **Output Current:** Up to 300mA  
- **Switching Frequency:** 1.6MHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin VSSOP (MM)  

**Descriptions and Features:**  
- Synchronous buck regulator with integrated switches  
- Low quiescent current (30µA typical)  
- Pulse-Width Modulation (PWM) operation for better efficiency  
- Soft-start and thermal shutdown protection  
- Adjustable output voltage via external resistors  
- Small footprint due to high switching frequency  
- Suitable for portable and battery-powered applications  

This information is based on the manufacturer's datasheet.

Partnumber Manufacturer Quantity Availability
LM3743MM-300,LM3743MM300 NS 50 In Stock

Description and Introduction

High-Performance Synchronous Buck Controller with Comprehensive Fault Protection Features The LM3743MM-300 is a switching regulator manufactured by Texas Instruments (NS).  

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage:** 3.0V (fixed)  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 1.5MHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin VSSOP (MM)  

### **Descriptions:**  
The LM3743MM-300 is a synchronous step-down DC-DC converter with integrated power MOSFETs. It provides a fixed 3.0V output from an input voltage range of 2.7V to 5.5V, making it suitable for battery-powered applications.  

### **Features:**  
- **Integrated Power MOSFETs** – Reduces external component count.  
- **High Efficiency** – Up to 95% efficiency with synchronous rectification.  
- **1.5MHz Switching Frequency** – Allows for small external components.  
- **Low Dropout Operation** – Extends battery life in portable applications.  
- **Thermal Shutdown & Current Limit Protection** – Enhances reliability.  
- **Soft-Start Function** – Reduces inrush current during startup.  
- **Power-Save Mode** – Improves efficiency at light loads.  

This regulator is commonly used in portable electronics, industrial systems, and embedded applications requiring a stable 3.0V supply.

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