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LM2577N-ADJ from NS,National Semiconductor

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LM2577N-ADJ

Manufacturer: NS

SIMPLE SWITCHER Step-Up Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2577N-ADJ,LM2577NADJ NS 51 In Stock

Description and Introduction

SIMPLE SWITCHER Step-Up Voltage Regulator The LM2577N-ADJ is a switching regulator IC manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Input Voltage Range:** 3.5V to 40V  
- **Adjustable Output Voltage:** 1.23V to 40V  
- **Output Current:** Up to 3A (with appropriate heat sinking)  
- **Switching Frequency:** 52 kHz (fixed)  
- **Efficiency:** Up to 80%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package Type:** TO-220-5 (through-hole)  

### **Descriptions:**  
The LM2577N-ADJ is a step-up (boost), step-down (buck), flyback, or forward converter switching regulator. It is designed for ease of use in a wide range of applications, requiring minimal external components. The adjustable output version allows for flexibility in setting the desired output voltage.  

### **Features:**  
- Adjustable output voltage with feedback pin  
- Internal current limiting and thermal shutdown  
- Requires only four external components (inductor, diode, capacitor, and feedback resistors)  
- Wide input voltage range  
- High efficiency switching regulator  
- Fixed-frequency oscillator for predictable noise performance  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

SIMPLE SWITCHER Step-Up Voltage Regulator

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