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LM2577T-15 from NS,National Semiconductor

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LM2577T-15

Manufacturer: NS

SIMPLE SWITCHER Step-Up Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2577T-15,LM2577T15 NS 159 In Stock

Description and Introduction

SIMPLE SWITCHER Step-Up Voltage Regulator The LM2577T-15 is a step-up (boost) switching regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** Fixed +15V  
- **Input Voltage Range:** 3.5V to 40V  
- **Output Current:** Up to 3A (depending on input voltage and heat dissipation)  
- **Switching Frequency:** 52 kHz (typical)  
- **Efficiency:** Up to 85%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-220 (5-pin)  

### **Descriptions:**  
- The LM2577T-15 is a monolithic integrated circuit designed for step-up (boost), flyback, and forward converter applications.  
- It includes a fixed-frequency oscillator, a high-current switch, and internal feedback control.  
- Requires minimal external components for operation.  

### **Features:**  
- **Fixed Output Voltage:** +15V (±4% tolerance)  
- **Wide Input Voltage Range:** 3.5V to 40V  
- **High Current Switch:** Supports up to 3A output  
- **Internal Frequency Compensation:** Simplifies circuit design  
- **Thermal Shutdown & Current Limiting:** Protects against overloads  
- **Low Standby Current:** Typically 5mA in shutdown mode  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

SIMPLE SWITCHER Step-Up Voltage Regulator

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