TI UC3853N

平均电流56kHz ~ 94kHz

Overview

The UC3853N provides simple, yet high performance active power factor correction. Using the same control technique as the UC1854, this 8-pin device exploits a simplified architecture and an internal oscillator to minimize external component count. The UC3853N incorporates a precision multiplier/squarer/divider circuit, voltage and current loop error amplifiers, and a precision voltage reference to implement average current mode control with RMS line voltage compensation. This control technique maintains constant loop gain with changes in input voltage, which minimizes input line current distortion over the worldwide input voltage range.

These devices are available in 8-pin plastic and ceramic dual in-line (DIP) packages, and 8-lead small outline (SOIC) packages. The UC1853 is specified for operation from \x9655°C to +125°C, the UC2853 is specified for operation from \x9625°C to +85°C, and the UC3853 is specified foroperation from 0°C to +70°C.

Features

Tube Package

Through Hole Mounting Type

Applications

There are a lot of Texas Instruments
UC3853N PFC PMICs applications.

• Communication device
• Personal communication device
• Portable telephone
• Electronic notebook
• Camera
• Video equipment
• CPU power supply
• Switching regulator
• Multiple-power supply system
• Digital audio player