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LM2577S-15

SIMPLE SWITCHER Step-Up Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2577S-15,LM2577S15 10 In Stock

Description and Introduction

SIMPLE SWITCHER Step-Up Voltage Regulator The LM2577S-15 is a step-up (boost), flyback, and forward converter switching regulator manufactured by Texas Instruments.  

### **Specifications:**  
- **Output Voltage:** Fixed +15V  
- **Output Current:** Up to 3A (depending on input voltage and circuit configuration)  
- **Input Voltage Range:** 3.5V to 40V  
- **Switching Frequency:** 52 kHz (fixed)  
- **Efficiency:** Up to 80%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263-5 (D2PAK)  

### **Descriptions:**  
- The LM2577S-15 is a monolithic integrated circuit optimized for step-up (boost), flyback, and forward converter applications.  
- It includes a fixed-frequency oscillator, a high-current switch, and internal feedback compensation.  
- Requires minimal external components for operation.  

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

This information is sourced from Texas Instruments' official documentation.

Application Scenarios & Design Considerations

SIMPLE SWITCHER Step-Up Voltage Regulator
Partnumber Manufacturer Quantity Availability
LM2577S-15,LM2577S15 NS 291 In Stock

Description and Introduction

SIMPLE SWITCHER Step-Up Voltage Regulator The LM2577S-15 is a step-up (boost), flyback, and forward converter switching regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** Fixed +15V  
- **Output Current:** Up to 3A (depending on input voltage and external components)  
- **Input Voltage Range:** 3.5V to 40V  
- **Switching Frequency:** 52 kHz  
- **Efficiency:** Up to 80%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263 (D2PAK)  

### **Descriptions:**  
- The LM2577S-15 is a monolithic integrated circuit optimized for step-up (boost), flyback, and forward converter applications.  
- It includes a fixed-frequency oscillator, a high-current switch, and internal feedback compensation.  
- Requires minimal external components for operation.  

### **Features:**  
- **Fixed 15V Output** (also available in adjustable version, LM2577S-ADJ)  
- **3A Switch Current Capability**  
- **Wide Input Voltage Range** (3.5V to 40V)  
- **Internal Frequency Compensation**  
- **Thermal Shutdown and Current Limiting Protection**  
- **Low Standby Current (50 µA typical in shutdown mode)**  
- **Simple and Easy-to-Use Design**  

The LM2577S-15 is commonly used in power supply applications such as battery chargers, industrial power systems, and automotive electronics.  

*(Note: National Semiconductor (NS) was acquired by Texas Instruments in 2011.)*

Application Scenarios & Design Considerations

SIMPLE SWITCHER Step-Up Voltage Regulator

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