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UC3854 Pinout Diagram

Part Series:UC3854 Series
Category:Power Management
Description:TEXAS INSTRUMENTS UC3854N PFC Controller IC, 15V to 35V & 10mA Supply, 15V Lockout, 95% Duty Cycle, 102kHz, DIP-16
Document:UC3854N Datasheet PDF (12 Pages)

UC3854N - TI Specifications

TYPE
DESCRIPTION
Mounting Style
Through Hole
Frequency
200 kHz
Number of Pins
16 Pin
Supply Voltage (DC)
15.0V (min)
Operating Voltage
16V ~ 30V
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UC3854N - TI Function Overview

The UC3854N is a High Power Factor Preregulator that provides active power factor correction for power systems that otherwise would draw non-sinusoidal current from sinusoidal power lines. This device implements all the control functions necessary to build a power supply capable of optimally using available power-line current while minimizing line-current distortion. To do this, it contains a voltage amplifier, an analogue multiplier/divider, a current amplifier and a fixed-frequency PWM. In addition, the UC3854 contains a power MOSFET compatible gate driver, 7.5V reference, line anticipator, load-enable comparator, low-supply detector and over-current comparator. The UC3854 uses average current-mode control to accomplish fixed-frequency current control with stability and low distortion. Unlike peak current-mode, average current control accurately maintains sinusoidal line current without slope compensation and with minimal response to noise transients.
Control boost PWM to 0.99 power factor
Limit line current distortion to <5%
World-wide operation without switches
Feed-forward line regulation
Average current-mode control
Low noise sensitivity
Low start-up supply current
Fixed-frequency PWM drive
Low-offset analogue multiplier/divider
1A Totem-pole gate driver
Precision voltage reference
Green product and no Sb/Br
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