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LM2574MX-3.3 from NS,National Semiconductor

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LM2574MX-3.3

Manufacturer: NS

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2574MX-3.3,LM2574MX33 NS 500 In Stock

Description and Introduction

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator The LM2574MX-3.3 is a step-down (buck) switching voltage regulator manufactured by ON Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 3.3V (fixed)  
- **Input Voltage Range:** 4.5V to 40V  
- **Output Current:** Up to 500mA  
- **Switching Frequency:** 52 kHz (typical)  
- **Efficiency:** Up to 80%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOIC-8  
- **Regulation Type:** PWM (Pulse Width Modulation)  
- **Protection Features:** Thermal shutdown and current limit  

### **Descriptions:**  
The LM2574MX-3.3 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. The fixed 3.3V output version simplifies design by eliminating the need for external feedback resistors.  

### **Features:**  
- Simple and easy-to-use buck regulator  
- Requires only 4 external components  
- Low standby current (50 µA typical)  
- Internal frequency compensation  
- Available in fixed and adjustable output versions  
- Wide input voltage range  
- Thermal shutdown and current limit protection  

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

Application Scenarios & Design Considerations

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator

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