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LT1246CN8 from LINEAR

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LT1246CN8

Manufacturer: LINEAR

1MHz Off-Line Current Mode PWM and DC/DC Converter

Partnumber Manufacturer Quantity Availability
LT1246CN8 LINEAR 2462 In Stock

Description and Introduction

1MHz Off-Line Current Mode PWM and DC/DC Converter The LT1246CN8 is a power factor correction (PFC) controller manufactured by Linear Technology (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 18V  
- **Operating Frequency:** Up to 200kHz  
- **Output Drive Current:** ±1A (peak)  
- **Power Factor Correction:** >0.99  
- **Total Harmonic Distortion (THD):** <5%  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The LT1246CN8 is designed for active power factor correction in AC/DC power supplies. It operates in continuous conduction mode (CCM) and provides high power factor with low harmonic distortion. The IC features an average current mode control architecture for precise regulation.  

### **Features:**  
- **Average Current Mode Control** for accurate PFC  
- **Low Start-Up Current** (<100µA)  
- **Programmable Oscillator Frequency**  
- **Overvoltage Protection (OVP)**  
- **Undervoltage Lockout (UVLO)**  
- **Soft-Start Function**  
- **Zero Current Detection (ZCD)**  
- **High Noise Immunity**  

This IC is commonly used in switch-mode power supplies (SMPS), LED drivers, and industrial power systems requiring power factor correction.  

(Source: Linear Technology Datasheet)

Partnumber Manufacturer Quantity Availability
LT1246CN8 LT 15 In Stock

Description and Introduction

1MHz Off-Line Current Mode PWM and DC/DC Converter The LT1246CN8 is a power factor correction (PFC) controller manufactured by Linear Technology (now part of Analog Devices).  

### **Specifications:**  
- **Manufacturer:** Linear Technology (LT)  
- **Type:** Power Factor Correction (PFC) Controller  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  
- **Operating Voltage Range:** 10V to 22V  
- **Switching Frequency:** Adjustable (typically up to 250kHz)  
- **Maximum Duty Cycle:** 95%  
- **Input Voltage Range:** Supports universal AC input (85VAC to 265VAC)  
- **Output Voltage Regulation:** Adjustable via external components  
- **Current Sense Input:** Includes a multiplier for accurate current sensing  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions and Features:**  
- Designed for high-efficiency power factor correction in AC/DC power supplies.  
- Uses average current mode control for low distortion and high power factor (>0.99).  
- Includes an internal start-up timer and under-voltage lockout (UVLO) for reliable operation.  
- Features a precision reference voltage (2.5V) for stable output regulation.  
- Supports both boost and flyback PFC topologies.  
- Low standby power consumption with a shutdown feature.  
- Includes over-voltage protection (OVP) and soft-start functionality.  

This IC is commonly used in power supply designs requiring compliance with energy efficiency standards.  

(Note: Always refer to the official datasheet for detailed electrical characteristics and application guidelines.)

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