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LM2574N-5.0 from NS,National Semiconductor

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LM2574N-5.0

Manufacturer: NS

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2574N-5.0,LM2574N50 NS 2500 In Stock

Description and Introduction

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator The LM2574N-5.0 is a step-down (buck) switching regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 5.0V (fixed)  
- **Input Voltage Range:** 4.5V to 40V  
- **Output Current:** 0.5A (max)  
- **Switching Frequency:** 52 kHz (typical)  
- **Efficiency:** Up to 80%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** PDIP-8 (Plastic Dual In-Line Package)  
- **Regulation Type:** PWM (Pulse Width Modulation)  

### **Descriptions:**  
- The LM2574N-5.0 is a monolithic integrated circuit designed for step-down voltage regulation.  
- It requires minimal external components, simplifying design.  
- Includes built-in frequency compensation and a fixed-frequency oscillator.  
- Features thermal shutdown and current limit protection.  

### **Features:**  
- **Simple Design:** Requires only 4 external components.  
- **Low Power Standby Mode:** Typically 50µA.  
- **High Efficiency:** Reduces heat dissipation.  
- **Internal Current Limiting & Thermal Shutdown:** Protects against overloads.  
- **Stable with Low-ESR Capacitors:** Works with ceramic or electrolytic capacitors.  

This regulator is commonly used in power supply applications, automotive systems, and battery-powered devices.

Application Scenarios & Design Considerations

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator

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