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UC3854BDWTR from UCC

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31.006ms

UC3854BDWTR

Manufacturer: UCC

Enhanced High Power Factor Preregulator

Partnumber Manufacturer Quantity Availability
UC3854BDWTR UCC 62 In Stock

Description and Introduction

Enhanced High Power Factor Preregulator The UC3854BDWTR is a high-performance power factor correction (PFC) controller manufactured by Texas Instruments (formerly Unitrode).  

### **Key Specifications:**  
- **Input Voltage Range:** 15V to 35V  
- **Operating Frequency:** Up to 500 kHz  
- **Driver Output Current:** 1.5A (peak)  
- **Power Factor Correction:** Near-unity power factor  
- **Package:** SOIC-16 (DW)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions & Features:**  
- **Average Current Mode Control:** Ensures low distortion input current.  
- **Precision Reference:** 7.5V ±1% bandgap reference.  
- **Programmable Oscillator:** Allows frequency adjustment with an external resistor.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Overvoltage Protection (OVP):** Monitors output voltage for safety.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation within voltage limits.  
- **Low Startup Current:** Typically 150µA.  
- **Multiplier/Divider Circuit:** Optimizes input current shaping.  

This IC is commonly used in AC/DC power supplies, industrial systems, and applications requiring compliance with power quality standards (e.g., IEC 61000-3-2).

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