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UC3854BDW from N/A

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UC3854BDW

Manufacturer: N/A

Enhanced High Power Factor Preregulator

Partnumber Manufacturer Quantity Availability
UC3854BDW N/A 1 In Stock

Description and Introduction

Enhanced High Power Factor Preregulator The UC3854BDW is a high-performance power factor correction (PFC) controller manufactured by Texas Instruments. Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Texas Instruments  
- **Category:** PMIC - Power Factor Correction (PFC) Controllers  
- **Package:** SOIC-16 (DW)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Input Voltage Range:** Up to 18V (for VCC)  
- **Output Voltage:** Adjustable based on external components  
- **Switching Frequency:** Programmable up to 250kHz  
- **Current Limiting:** Yes  
- **Soft-Start:** Programmable  
- **Zero-Current Detection:** Yes  
- **Peak Current Mode Control:** Yes  

### **Descriptions:**
The UC3854BDW is a dedicated PFC controller designed to improve power factor in AC/DC power supplies. It implements average current-mode control to regulate input current in phase with input voltage, ensuring high power factor (>0.99). It is widely used in offline power supplies, industrial systems, and lighting applications.

### **Features:**
- **Average Current Mode Control:** Ensures low distortion input current.  
- **Programmable Oscillator:** Allows flexible switching frequency adjustment.  
- **Overvoltage Protection (OVP):** Protects against output overvoltage conditions.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation within safe voltage ranges.  
- **Low Startup Current:** Reduces power consumption during startup.  
- **High Drive Output:** Capable of driving external MOSFETs or IGBTs directly.  
- **Precision Reference Voltage:** 7.5V reference for accurate regulation.  
- **Multiplier/Divider Circuit:** Optimizes power factor correction performance.  

This information is strictly factual and based on the manufacturer's datasheet.

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