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LM2575S-33 from NSC,National Semiconductor

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LM2575S-33

Manufacturer: NSC

3.3V dual 1.0A step down switching voltage regulator

Partnumber Manufacturer Quantity Availability
LM2575S-33,LM2575S33 NSC 154 In Stock

Description and Introduction

3.3V dual 1.0A step down switching voltage regulator The LM2575S-33 is a step-down (buck) switching regulator manufactured by National Semiconductor (NSC).  

### **Specifications:**  
- **Output Voltage:** Fixed 3.3V  
- **Input Voltage Range:** 4.75V to 40V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 52 kHz  
- **Efficiency:** Up to 88%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263 (D2PAK)  
- **Regulation Type:** PWM (Pulse Width Modulation)  
- **Protection Features:** Thermal shutdown and current limit  

### **Descriptions:**  
The LM2575S-33 is a monolithic integrated circuit that provides all active functions for a step-down switching regulator. It is designed for easy implementation in various power supply applications with minimal external components.  

### **Features:**  
- Simple and easy-to-use design  
- Requires only 4 external components  
- Internal frequency compensation  
- Low power standby mode (IQ ≈ 50 µA)  
- High efficiency compared to linear regulators  
- Wide input voltage range  
- Available in fixed and adjustable output versions  

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

Application Scenarios & Design Considerations

3.3V dual 1.0A step down switching voltage regulator

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