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LT1248IS from LINEAR

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LT1248IS

Manufacturer: LINEAR

Power Factor Controller

Partnumber Manufacturer Quantity Availability
LT1248IS LINEAR 10 In Stock

Description and Introduction

Power Factor Controller The LT1248IS is a power factor correction (PFC) controller manufactured by Linear Technology (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 36V  
- **Operating Frequency:** Up to 300kHz  
- **Peak Output Current:** 1.5A  
- **Power Factor Correction:** Active PFC control  
- **Package:** 16-Pin SOIC (Small Outline Integrated Circuit)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Control Method:** Average current mode control  

### **Descriptions:**  
The LT1248IS is designed for high-performance power factor correction applications. It provides precise control of input current to maintain a near-unity power factor, improving efficiency in AC/DC power supplies.  

### **Features:**  
- **Average Current Mode Control:** Ensures low distortion input current.  
- **Wide Input Voltage Range:** Supports various AC input voltages.  
- **Programmable Oscillator Frequency:** Adjustable up to 300kHz.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Overvoltage Protection (OVP):** Safeguards against output overvoltage.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low-voltage conditions.  

This IC is commonly used in power supplies, LED drivers, and industrial applications requiring high power factor correction.

Application Scenarios & Design Considerations

Power Factor Controller
Partnumber Manufacturer Quantity Availability
LT1248IS LT 107 In Stock

Description and Introduction

Power Factor Controller The LT1248IS is a high-performance power factor correction (PFC) controller manufactured by Linear Technology (now part of Analog Devices).  

### **Key Specifications:**  
- **Input Voltage Range:** 4.5V to 36V  
- **Operating Frequency:** Up to 250kHz  
- **Output Drive Current:** ±1A (peak)  
- **Power Factor Correction:** Near-unity power factor  
- **Package Type:** 16-pin SOIC (Small Outline Integrated Circuit)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The LT1248IS is designed for active power factor correction in AC/DC power supplies. It uses a boost converter topology to shape the input current waveform to match the input voltage, improving efficiency and reducing harmonic distortion.  

### **Features:**  
- **Average Current Mode Control:** Ensures low distortion input current.  
- **Programmable Frequency:** Adjustable via an external resistor.  
- **Soft-Start Function:** Reduces inrush current.  
- **Overvoltage Protection (OVP):** Prevents output overvoltage conditions.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low input voltage.  
- **Zero Current Detection:** Optimizes efficiency at light loads.  

This IC is commonly used in power supplies, LED drivers, and industrial applications requiring compliance with power quality standards.

Application Scenarios & Design Considerations

Power Factor Controller

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