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LM2574N-3.3 from MOTOROLA

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LM2574N-3.3

Manufacturer: MOTOROLA

0.5A, Adjustable Output Voltage, Step-Down Switching Regulator

Partnumber Manufacturer Quantity Availability
LM2574N-3.3,LM2574N33 MOTOROLA 2320 In Stock

Description and Introduction

0.5A, Adjustable Output Voltage, Step-Down Switching Regulator The LM2574N-3.3 is a step-down (buck) switching regulator manufactured by **MOTOROLA**. 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  
- **Efficiency:** Up to 80%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 8-Pin DIP (Dual Inline Package)  

### **Descriptions:**  
- The LM2574N-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 only a few external components, simplifying design.  
- Includes built-in frequency compensation and a fixed-frequency oscillator.  

### **Features:**  
- **Fixed 3.3V Output** (other variants available for adjustable output)  
- **Low Power Standby Mode** (IQ typically 50µA)  
- **Internal Current Limiting & Thermal Shutdown** for protection  
- **Wide Input Voltage Range** (4.5V to 40V)  
- **Minimal External Components Required**  
- **High Efficiency** compared to linear regulators  

This regulator is commonly used in power supply applications, battery chargers, and DC-DC converters.

Application Scenarios & Design Considerations

0.5A, Adjustable Output Voltage, Step-Down Switching Regulator

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