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LM2576T-ADJ/NOPB from NSC,National Semiconductor

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LM2576T-ADJ/NOPB

Manufacturer: NSC

SIMPLE SWITCHER? 40V, 3A Low Component Count Step-Down Regulator 5-TO-220 -40 to 125

Partnumber Manufacturer Quantity Availability
LM2576T-ADJ/NOPB,LM2576TADJNOPB NSC 1620 In Stock

Description and Introduction

SIMPLE SWITCHER? 40V, 3A Low Component Count Step-Down Regulator 5-TO-220 -40 to 125 The LM2576T-ADJ/NOPB is a switching voltage regulator manufactured by National Semiconductor (NSC). Below are its specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 4.75V to 40V  
- **Output Voltage Range:** Adjustable from 1.23V to 37V  
- **Output Current:** 3A  
- **Switching Frequency:** 52 kHz  
- **Efficiency:** Up to 88%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package Type:** TO-220-5  
- **Regulation Type:** Buck (Step-Down)  
- **Protection Features:** Thermal shutdown, current limit  

### **Descriptions:**
The LM2576T-ADJ/NOPB is a monolithic integrated circuit that provides all active functions for a step-down (buck) switching regulator. It is designed for easy implementation and requires minimal external components. The adjustable version allows the output voltage to be set using external resistors.  

### **Features:**
- **Simple and Easy to Use:** Requires only 4 external components.  
- **High Efficiency:** Reduces power dissipation.  
- **Wide Input Voltage Range:** Suitable for various applications.  
- **Fixed and Adjustable Versions Available:** LM2576T-ADJ is the adjustable variant.  
- **Thermal Shutdown and Current Limit Protection:** Enhances reliability.  
- **Low Power Standby Mode:** Improves efficiency in light-load conditions.  

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

Application Scenarios & Design Considerations

SIMPLE SWITCHER? 40V, 3A Low Component Count Step-Down Regulator 5-TO-220 -40 to 125

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