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UC3853D from UC

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UC3853D

Manufacturer: UC

High Power-Factor Preregulator

Partnumber Manufacturer Quantity Availability
UC3853D UC 50 In Stock

Description and Introduction

High Power-Factor Preregulator The UC3853D is a power factor correction (PFC) controller manufactured by Texas Instruments. Below are its specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** Texas Instruments  
- **Type:** Power Factor Correction (PFC) Controller  
- **Package:** SOIC-16  
- **Operating Temperature Range:** -40°C to +85°C  
- **Supply Voltage (VCC):** 15V (typical)  
- **Maximum Supply Voltage (VCC):** 22V  
- **Start-Up Supply Current:** 0.5mA (typical)  
- **Operating Supply Current:** 5mA (typical)  
- **Switching Frequency Range:** Adjustable (typically up to 250kHz)  
- **Output Drive Current:** ±1.5A (peak)  
- **Reference Voltage (VREF):** 7.5V (typical)  
- **Error Amplifier Bandwidth:** 5MHz (typical)  

### **Descriptions:**
The UC3853D 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. It is commonly used in AC/DC power supplies and offline power converters to meet regulatory standards for harmonic distortion.

### **Features:**
- **Average Current Mode Control:** Provides low-distortion input current waveform.  
- **Programmable Switching Frequency:** Allows flexibility in design.  
- **Integrated Multiplier/Divider:** Simplifies PFC implementation.  
- **Overvoltage Protection (OVP):** Prevents output overvoltage conditions.  
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Low Distortion and High Power Factor:** Ensures compliance with IEC 61000-3-2 standards.  

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

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