UC3854B preregulator equivalent, enhanced high power factor preregulator.
* Controls Boost PWM to Near Unity
Power Factor
* Limits Line Current Distortion To <3%
* World-Wide Operation Without Switches
* Accurate Power Limiting
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reference data refer to Unitrode application notes U-134 and DN-44.
MULTIPLY / SQUARE AND DIVIDE
The UC1854A/B Multiplie.
The UC1854A/B products are pin compatible enhanced versions of the UC1854. Like the UC1854, these products provide all of the functions necessary for active power factor corrected preregulators. The controller achieves near unity power factor by shap.
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