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LM2574MX-ADJ from NS,National Semiconductor

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LM2574MX-ADJ

Manufacturer: NS

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2574MX-ADJ,LM2574MXADJ NS 94600 In Stock

Description and Introduction

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator The LM2574MX-ADJ is a step-down (buck) switching regulator manufactured by National Semiconductor (NS). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 40V  
- **Adjustable Output Voltage Range:** 1.23V to 37V  
- **Output Current:** 500mA  
- **Switching Frequency:** 52kHz  
- **Efficiency:** Up to 80%  
- **Operating Junction Temperature:** -40°C to +125°C  
- **Package:** SOIC-8  

### **Descriptions:**  
- The LM2574MX-ADJ is a monolithic integrated circuit that provides all active functions for a step-down switching regulator.  
- It is designed to drive a load current of up to 500mA with excellent line and load regulation.  
- The adjustable version allows the output voltage to be set using external resistors.  

### **Features:**  
- Requires only 4 external components  
- Internal frequency compensation  
- Fixed-frequency oscillator (52kHz)  
- Thermal shutdown and current limit protection  
- Low power standby mode (IQ ≈ 50µA)  
- Available in adjustable and fixed output voltage versions  

This information is based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator

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