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UC3853N from UNIDEN

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UC3853N

Manufacturer: UNIDEN

High Power-Factor Preregulator

Partnumber Manufacturer Quantity Availability
UC3853N UNIDEN 5 In Stock

Description and Introduction

High Power-Factor Preregulator The UC3853N is a power factor correction (PFC) controller IC manufactured by **Unitrode (now part of Texas Instruments)**. Below are its key specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Manufacturer:** Unitrode (Uniden is not the manufacturer; it may be a typo or confusion with another brand).  
- **Type:** Power Factor Correction (PFC) Controller IC.  
- **Package:** PDIP-16 (Plastic Dual In-Line Package).  
- **Operating Voltage:** Up to **18V**.  
- **Switching Frequency:** Adjustable (typically up to **200 kHz**).  
- **Current Sensing:** Includes a **multiplier/divider** for accurate current control.  
- **Error Amplifier:** Features a wide bandwidth for precise voltage regulation.  
- **Protection Features:**  
  - Undervoltage Lockout (UVLO).  
  - Overvoltage Protection (OVP).  
  - Soft-start capability.  

### **Descriptions:**  
- The UC3853N is designed for **active power factor correction** in AC/DC power supplies.  
- It operates in **average current mode control**, improving efficiency and reducing harmonic distortion.  
- Suitable for **boost converter** topologies in PFC applications.  

### **Features:**  
- **Average Current Mode Control** for improved PFC performance.  
- **Programmable Oscillator** for flexible switching frequency adjustment.  
- **Precision Reference Voltage (7.5V)** for stable regulation.  
- **Low Startup Current** for reduced power consumption.  
- **Multiplier/Divider Circuit** for accurate input current shaping.  

This IC is commonly used in **power supplies, industrial equipment, and consumer electronics** requiring compliance with power factor correction standards.  

(Note: If you meant a different part or manufacturer, please verify the correct model number.)

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