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UC3854DWG4 from TI,Texas Instruments

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UC3854DWG4

Manufacturer: TI

High Power Factor Preregulator

Partnumber Manufacturer Quantity Availability
UC3854DWG4 TI 3000 In Stock

Description and Introduction

High Power Factor Preregulator The UC3854DWG4 is a power factor correction (PFC) controller manufactured by Texas Instruments (TI). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)
- **Part Number:** UC3854DWG4
- **Package:** SOIC-16 (DWG)
- **Operating Temperature Range:** -40°C to +85°C
- **Input Voltage Range (VCC):** Up to 22V
- **Output Drive Current:** 1A (peak)
- **Switching Frequency:** Adjustable (up to 500 kHz)
- **Control Method:** Average Current Mode Control
- **Power Factor Correction:** >0.99 typical
- **Start-Up Current:** <1mA
- **Reference Voltage:** 7.5V (precision)

### **Descriptions:**
The UC3854DWG4 is a high-performance PFC controller designed for active power factor correction in AC/DC power supplies. It uses average current mode control to achieve near-unity power factor and low harmonic distortion. It is widely used in applications requiring compliance with power quality standards such as IEC 61000-3-2.

### **Features:**
- **Average Current Mode Control:** Ensures low input current distortion.
- **Programmable Oscillator:** Allows adjustment of switching frequency.
- **Precision Reference Voltage (7.5V):** Provides stable regulation.
- **Overvoltage Protection (OVP):** Protects against output overvoltage.
- **Undervoltage Lockout (UVLO):** Ensures proper start-up and shutdown.
- **Low Distortion:** Minimizes harmonic content in the input current.
- **High Drive Output:** Capable of driving power MOSFETs or IGBTs directly.
- **Wide Operating Temperature Range:** Suitable for industrial applications.

This information is sourced from TI's official documentation. For detailed application notes, refer to the manufacturer's datasheet.

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