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UC3855BDW from TI,Texas Instruments

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UC3855BDW

Manufacturer: TI

High Performance Power Factor Preregulator

Partnumber Manufacturer Quantity Availability
UC3855BDW TI 126 In Stock

Description and Introduction

High Performance Power Factor Preregulator The UC3855BDW 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:** UC3855BDW
- **Package:** SOIC-16 (DW)
- **Operating Temperature Range:** -40°C to +85°C
- **Supply Voltage (VCC):** 15V to 35V
- **Maximum Switching Frequency:** 200kHz
- **Control Method:** Average Current Mode Control
- **Output Drive Current:** 1.5A (peak)
- **Power Factor Correction (PFC):** Yes
- **Start-Up Current:** <150µA
- **Reference Voltage (VREF):** 7.5V ±1%

### **Descriptions:**
The UC3855BDW is a high-performance PFC controller designed for boost-type power factor correction circuits. It employs average current mode control to ensure near-unity power factor and low harmonic distortion. The IC is optimized for AC-DC power supplies, ensuring compliance with international power quality standards.

### **Features:**
- **Average Current Mode Control:** Ensures low harmonic distortion.
- **Programmable Switching Frequency:** Up to 200kHz.
- **Low Start-Up Current:** Reduces power consumption during startup.
- **Precision Reference Voltage (7.5V):** Ensures stable operation.
- **Overvoltage Protection (OVP):** Protects against output overvoltage.
- **Undervoltage Lockout (UVLO):** Ensures proper operation within supply voltage range.
- **Multiplier/Divider Circuit:** Optimizes PFC performance.
- **Soft-Start Function:** Reduces inrush current.
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.

This IC is commonly used in power supplies, industrial equipment, and applications requiring high power factor correction efficiency.

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