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UC3854AN from TI,Texas Instruments

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UC3854AN

Manufacturer: TI

Enhanced High Power Factor Preregulator

Partnumber Manufacturer Quantity Availability
UC3854AN TI 9000 In Stock

Description and Introduction

Enhanced High Power Factor Preregulator The UC3854AN is a power factor correction (PFC) controller manufactured by Texas Instruments (TI). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Texas Instruments (TI)  
- **Category:** Power Management ICs  
- **Subcategory:** Power Factor Correction (PFC) Controllers  
- **Package:** PDIP-16 (Plastic Dual In-Line Package)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Supply Voltage (VCC):** Up to 35V  
- **Output Current:** 1A (Peak)  
- **Switching Frequency:** Adjustable (up to 500 kHz)  
- **Control Method:** Average Current Mode Control  

### **Descriptions:**  
The UC3854AN is a high-performance PFC controller designed for boost-type power factor correction circuits. It ensures near-unity power factor by shaping the input current to follow the input voltage waveform. The IC integrates all necessary control functions, including voltage regulation, current sensing, and PWM generation, making it suitable for AC/DC power supplies and offline converters.  

### **Features:**  
- **Power Factor Correction:** Enables near-unity power factor in AC/DC systems.  
- **Average Current Mode Control:** Ensures low harmonic distortion.  
- **Programmable Oscillator:** Adjustable switching frequency up to 500 kHz.  
- **Overvoltage Protection (OVP):** Prevents excessive output voltage.  
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **Peak Current Limiting:** Protects against overload conditions.  
- **Multiplier/Divider Circuit:** Optimizes input current shaping.  
- **Soft-Start Function:** Reduces inrush current during startup.  

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

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