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LM3403MX from NS,National Semiconductor

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LM3403MX

Manufacturer: NS, NSC

Quad Operational Amplifiers

Partnumber Manufacturer Quantity Availability
LM3403MX NS, NSC 1452 In Stock

Description and Introduction

Quad Operational Amplifiers The LM3403MX is a switching regulator manufactured by National Semiconductor (NSC). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Input Voltage Range:** 6V to 42V  
- **Output Voltage Range:** Adjustable from 1.225V to 37V  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** Adjustable up to 1MHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOIC-8  

### **Descriptions:**
- The LM3403MX is a step-down (buck) switching regulator designed for high-efficiency DC-DC conversion.  
- It integrates a high-side N-channel MOSFET and provides a constant output voltage with adjustable frequency operation.  
- Suitable for industrial, automotive, and consumer applications requiring stable power conversion.  

### **Features:**
- **Wide Input Voltage Range:** Supports 6V to 42V operation.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **High Efficiency:** Minimizes power loss with synchronous rectification.  
- **Frequency Adjustability:** Allows optimization for size and efficiency.  
- **Thermal Shutdown & Current Limiting:** Protects against overcurrent and overheating.  
- **Low Quiescent Current:** Improves efficiency in light-load conditions.  

This information is based solely on the manufacturer's datasheet.

Application Scenarios & Design Considerations

Quad Operational Amplifiers

Alternative Part Number

  • TL074CDR --: Quad low-noise JFET-input op-amp with similar bandwidth and supply range, widely available and pin-compatible in most quad op-amp sockets.
  • MC33074DR2G --: Quad operational amplifier with comparable gain-bandwidth and supply voltage range, suitable drop-in replacement for general-purpose quad op-amp applications.
  • LF347N --: Quad JFET-input op-amp offering similar performance characteristics and pinout, commonly used as an alternative to older quad op-amp devices.
  • LM324DR --: Industry-standard quad op-amp in SOIC-14, pin-compatible and broadly sourced; lower bandwidth but acceptable for many LM3403 applications.

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