UC3854 Datasheet (Unisonic Technologies) - ENHANCED HIGH POWER FACTOR PREREGULATOR

UC3854, ENHANCED HIGH POWER FACTOR PREREGULATOR

The UTC UC3854 provide all the functions necessary for active power factor corrected preregulators.

The controller achieves near unity power factor by shaping the AC input line current waveform to correspond to that of AC input line voltage.

Average current mode control maintains stable, low distort

UC3854 Features

* such as wide bandwidth, low offset Current Amplifier, a faster responding and improved accuracy enable comparator, a VREF "good" comparator, UVLO threshold options (16/10V for offline, 10.5/10V for startup from an auxiliary 12V regulator), lower startup supply current, and an enhanced multiply/divid