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LM3403M from NS,National Semiconductor

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LM3403M

Manufacturer: NS

Quad Operational Amplifiers

Partnumber Manufacturer Quantity Availability
LM3403M NS 2470 In Stock

Description and Introduction

Quad Operational Amplifiers The LM3403M is a switching regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 36V  
- **Output Voltage Range:** Adjustable down to 1.225V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** Adjustable from 50kHz to 1MHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The LM3403M is a monolithic buck (step-down) switching regulator designed for high-efficiency power conversion. It integrates a high-side N-channel MOSFET and provides a simple, compact solution for step-down DC-DC applications.  

### **Features:**  
- **Wide Input Voltage Range (4.5V to 36V)**  
- **Adjustable Output Voltage**  
- **Internal N-Channel MOSFET (0.25Ω typical RDS(ON))**  
- **Adjustable Switching Frequency (50kHz to 1MHz)**  
- **Cycle-by-Cycle Current Limiting**  
- **Thermal Shutdown Protection**  
- **Undervoltage Lockout (UVLO)**  
- **Soft-Start Capability**  

This regulator is commonly used in industrial, automotive, and general-purpose power supply applications.

Application Scenarios & Design Considerations

Quad Operational Amplifiers

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