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LM2574MX-5.0 from NS,National Semiconductor

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LM2574MX-5.0

Manufacturer: NS

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2574MX-5.0,LM2574MX50 NS 1716 In Stock

Description and Introduction

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator The LM2574MX-5.0 is a step-down (buck) switching regulator manufactured by ON Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 5.0V (fixed)  
- **Input Voltage Range:** 4.5V to 40V  
- **Output Current:** Up to 0.5A  
- **Switching Frequency:** 52 kHz (typical)  
- **Efficiency:** Up to 80%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOIC-8 (Surface Mount)  
- **Regulation Type:** PWM (Pulse Width Modulation)  
- **Protection Features:** Thermal shutdown, current limiting  

### **Descriptions:**  
The LM2574MX-5.0 is a monolithic integrated circuit that provides all active functions for a step-down switching regulator. It is designed for easy implementation and requires minimal external components.  

### **Features:**  
- Simple and easy-to-use design  
- Requires only 4 external components  
- Low power standby mode (IQ ≈ 50 µA)  
- Internal frequency compensation  
- Fixed and adjustable output voltage versions available  
- TTL shutdown capability  
- Soft-start function to reduce inrush current  

This regulator is commonly used in power supply applications for consumer electronics, industrial systems, and automotive applications.

Application Scenarios & Design Considerations

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator

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