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UC3854J from UC

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UC3854J

Manufacturer: UC

High Power Factor Preregulator

Partnumber Manufacturer Quantity Availability
UC3854J UC 12 In Stock

Description and Introduction

High Power Factor Preregulator The UC3854J is a power factor correction (PFC) controller manufactured by Texas Instruments. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** Texas Instruments  
- **Type:** High-performance PFC controller  
- **Package:** 16-pin PDIP (Plastic Dual In-Line Package)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Supply Voltage (VCC):** 15V to 35V  
- **Maximum Switching Frequency:** 250kHz  
- **Output Drive Current:** 1.5A peak  
- **Power Factor Correction Method:** Average current mode control  

### **Descriptions:**
The UC3854J is designed for active power factor correction in AC/DC power supplies. It uses average current mode control to achieve near-unity power factor and low harmonic distortion. It is commonly used in boost converter topologies for PFC applications.

### **Features:**
- **Precision Reference Voltage:** 7.5V with ±1% accuracy  
- **Low Distortion:** Ensures compliance with IEC 1000-3-2 standards  
- **Programmable Oscillator:** Adjustable switching frequency  
- **Soft-Start Function:** Reduces inrush current  
- **Overvoltage Protection (OVP):** Prevents output overvoltage  
- **Undervoltage Lockout (UVLO):** Ensures proper startup  
- **Current Limiting:** Protects against overloads  
- **Multiplier/Divider Circuit:** Ensures accurate power factor correction  

This information is based solely on the manufacturer's datasheet for the UC3854J.

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