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UCC2889 - Off-line Power Supply Controller

This page provides the datasheet information for the UCC2889, a member of the UCC1889 Off-line Power Supply Controller family.

Datasheet Summary

Description

regulated bias supply.

Ideal Primary-side Bias Supply visualized as two cascaded flyback conve

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Datasheet preview – UCC2889

Datasheet Details

Part number UCC2889
Manufacturer Unitrode
File Size 1.19 MB
Description Off-line Power Supply Controller
Datasheet download datasheet UCC2889 Datasheet
Additional preview pages of the UCC2889 datasheet.

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Full PDF Text Transcription

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Off-line Power Supply Controller UCC1889 UCC2889 UCC3889 FEATURES DESCRIPTION • Transformerless Off-line The UCC1889 controller is optimized for use as an off-line, low power, low voltage, Applications regulated bias supply. The unique circuit topology utilized in this device can be • Ideal Primary-side Bias Supply visualized as two cascaded flyback converters, each operating in the discontinuous mode, and both driven from a single external power switch. The significant • Efficient BiCMOS Design benefit of this approach is the ability to achieve voltage conversion ratios of 400V • Wide Input Range to 12V with no transformer and low internal losses.
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