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LM2574M-3.3 from NS,National Semiconductor

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LM2574M-3.3

Manufacturer: NS

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2574M-3.3,LM2574M33 NS 1341 In Stock

Description and Introduction

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator The LM2574M-3.3 is a step-down (buck) switching regulator manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**
- **Output Voltage:** 3.3V (fixed)  
- **Input Voltage Range:** 4.5V to 40V  
- **Output Current:** Up to 0.5A  
- **Switching Frequency:** 52 kHz (fixed)  
- **Efficiency:** Up to 80%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOIC-8 (M)  

### **Descriptions:**
- The LM2574M-3.3 is a monolithic integrated circuit that provides all active functions for a step-down switching regulator.  
- It is designed to drive a 0.5A load with excellent line and load regulation.  
- Requires minimal external components for operation.  
- Includes features like thermal shutdown and current limit protection.  

### **Features:**
- **Fixed 3.3V Output** (other variants available for adjustable output)  
- **Low Power Standby Mode** (IQ ≈ 50µA)  
- **Internal Frequency Compensation**  
- **Thermal Shutdown & Current Limit Protection**  
- **Wide Input Voltage Range (4.5V to 40V)**  
- **Requires Only 4 External Components**  
- **Stable with Low-ESR Output Capacitors**  

This information is strictly based on the manufacturer's datasheet for the LM2574M-3.3 by National Semiconductor (NS).

Application Scenarios & Design Considerations

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator

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