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LM2576-3.3BT from NS,National Semiconductor

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LM2576-3.3BT

Manufacturer: NS

52kHz Simple 3A Buck Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2576-3.3BT,LM257633BT NS 250 In Stock

Description and Introduction

52kHz Simple 3A Buck Voltage Regulator The LM2576-3.3BT is a step-down (buck) switching voltage regulator manufactured by ON Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 3.3V (fixed)  
- **Input Voltage Range:** 4.75V to 40V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 52 kHz (typical)  
- **Efficiency:** Up to 88%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-220-5 (BT suffix)  
- **Regulation Type:** PWM (Pulse-Width Modulation)  
- **Protection Features:** Thermal shutdown, current limit  

### **Descriptions:**  
The LM2576-3.3BT is a monolithic integrated circuit that provides all active functions for a step-down switching regulator. It is designed for easy implementation in power supply designs requiring high efficiency and minimal external components.  

### **Features:**  
- **Fixed 3.3V Output**  
- **Wide Input Voltage Range** (4.75V to 40V)  
- **3A Output Current Capability**  
- **Internal Frequency Compensation**  
- **Thermal Shutdown & Current Limit Protection**  
- **Requires Only 4 External Components**  
- **Low Power Standby Mode** (when disabled)  
- **Available in TO-220 Package**  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

52kHz Simple 3A Buck Voltage Regulator
Partnumber Manufacturer Quantity Availability
LM2576-3.3BT,LM257633BT MIC 2486 In Stock

Description and Introduction

52kHz Simple 3A Buck Voltage Regulator The LM2576-3.3BT is a step-down (buck) switching voltage regulator manufactured by Microchip Technology (formerly Micrel). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Output Voltage:** 3.3V (fixed)  
- **Input Voltage Range:** 4.5V to 40V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 52 kHz (typical)  
- **Efficiency:** Up to 88% (depending on conditions)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package Type:** TO-220-5 (BT suffix)  
- **Regulation Type:** PWM (Pulse Width Modulation)  
- **Protection Features:** Thermal shutdown, current limit  

### **Descriptions:**  
- The LM2576-3.3BT is a monolithic integrated circuit designed for step-down voltage regulation.  
- It simplifies power supply design by requiring minimal external components.  
- Suitable for applications requiring a stable 3.3V output from higher input voltages.  

### **Features:**  
- **Fixed 3.3V Output** (other variants available for adjustable output)  
- **Wide Input Voltage Range** (4.5V to 40V)  
- **High Efficiency** (up to 88%)  
- **Low Power Standby Mode** (when disabled)  
- **Thermal Shutdown & Current Limiting** for protection  
- **Simple External Components** (requires only 4 external components for operation)  
- **TO-220-5 Package** for easy mounting and heat dissipation  

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

Application Scenarios & Design Considerations

52kHz Simple 3A Buck Voltage Regulator

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