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LM2575T-ADJ from NATIONAL,National Semiconductor

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LM2575T-ADJ

Manufacturer: NATIONAL

SIMPLE SWITCHER 1A Step-Down Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2575T-ADJ,LM2575TADJ NATIONAL 120 In Stock

Description and Introduction

SIMPLE SWITCHER 1A Step-Down Voltage Regulator The LM2575T-ADJ is a step-down (buck) switching regulator manufactured by **National Semiconductor** (now part of Texas Instruments).  

### **Specifications:**  
- **Output Voltage:** Adjustable (1.23V to 37V)  
- **Output Current:** Up to 1A  
- **Input Voltage Range:** 4.75V to 40V  
- **Switching Frequency:** 52 kHz (fixed)  
- **Efficiency:** Up to 88%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-220 (5-pin)  
- **Regulation Type:** Buck (Step-Down)  
- **Protection Features:** Thermal shutdown and current limit  

### **Descriptions:**  
- The LM2575T-ADJ is a monolithic integrated circuit that provides all active functions for a step-down switching regulator.  
- It requires minimal external components, simplifying design.  
- Suitable for various applications, including power supplies, battery chargers, and DC-DC converters.  

### **Features:**  
- **Simple and Easy to Use** – Requires few external components.  
- **Wide Input Voltage Range** – Supports 4.75V to 40V input.  
- **Adjustable Output Voltage** – Set via external resistors.  
- **High Efficiency** – Reduces power dissipation.  
- **Thermal Shutdown & Current Limit Protection** – Enhances reliability.  
- **Fixed-Frequency Oscillator** – Ensures predictable performance.  

This information is based on the manufacturer's datasheet. For detailed application notes, refer to the official documentation.

Application Scenarios & Design Considerations

SIMPLE SWITCHER 1A Step-Down Voltage Regulator

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