Overview
The UC2854A/B and UC3854A/B are advanced high-power factor preregulators that provide all necessary functions for active power factor correction.
Key Features
These devices offer a wide bandwidth, low-offset current amplifier, faster and improved accuracy enable comparator, and UVLO threshold options.
They also feature a fixed-frequency oscillator, PWM, voltage amplifier with soft-start, line voltage feedforward, VRMS squarer, input supply voltage clamp, and overcurrent comparator.
Improvements
The UC2854A/B and UC3854A/B improve upon the UC2854 by offering a wide bandwidth, low-offset current amplifier, faster and improved accuracy enable comparator, and UVLO threshold options.
New features include amplifier output clamps, improved amplifier current sinking capability, and low offset VAC pin, which reduce the external component count while improving performance.
Manual:
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Pricing & Distributors: https://www.datasheets360.com/part/detail/uc2854bq/7299867894527373096/
