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LM2576T-12/NOPB from NS,National Semiconductor

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LM2576T-12/NOPB

Manufacturer: NS

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

Partnumber Manufacturer Quantity Availability
LM2576T-12/NOPB,LM2576T12NOPB NS 530 In Stock

Description and Introduction

SIMPLE SWITCHER? 40V, 3A Low Component Count Step-Down Regulator 5-TO-220 -40 to 125 The LM2576T-12/NOPB is a step-down (buck) switching regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** Fixed 12V  
- **Output Current:** Up to 3A  
- **Input Voltage Range:** 4.75V to 40V  
- **Switching Frequency:** 52 kHz  
- **Efficiency:** Up to 88%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-220-5 (Through-Hole)  
- **Regulation Type:** PWM (Pulse Width Modulation)  
- **Protection Features:** Thermal shutdown, current limit  

### **Descriptions:**  
The LM2576T-12/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 fixed 12V output version simplifies design by eliminating the need for external feedback resistors.  

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

This regulator is commonly used in power supply applications, battery chargers, and industrial systems.

Application Scenarios & Design Considerations

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

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