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LM2576SX-5.0/NOPB from NS,National Semiconductor

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LM2576SX-5.0/NOPB

Manufacturer: NS

SIMPLE SWITCHER? 40V, 3A Low Component Count Step-Down Regulator 5-DDPAK/TO-263 -40 to 125

Partnumber Manufacturer Quantity Availability
LM2576SX-5.0/NOPB,LM2576SX50NOPB NS 103 In Stock

Description and Introduction

SIMPLE SWITCHER? 40V, 3A Low Component Count Step-Down Regulator 5-DDPAK/TO-263 -40 to 125 The LM2576SX-5.0/NOPB is a step-down (buck) switching voltage regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 5.0V (fixed)  
- **Input Voltage Range:** 4.5V to 40V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 52 kHz (typical)  
- **Efficiency:** Up to 88%  
- **Operating Junction Temperature:** -40°C to +125°C  
- **Package:** TO-263-5 (D2PAK)  
- **Regulation Type:** PWM (Pulse Width Modulation)  
- **Protection Features:** Thermal shutdown, current limit  

### **Descriptions:**  
The LM2576SX-5.0/NOPB 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, requiring minimal external components.  

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

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

Application Scenarios & Design Considerations

SIMPLE SWITCHER? 40V, 3A Low Component Count Step-Down Regulator 5-DDPAK/TO-263 -40 to 125

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