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UCC3889 - Off-line Power Supply Controller

Download the UCC3889 datasheet PDF (UCC1889 included). The manufacturer datasheet provides complete specifications, pinout details, electrical characteristics, and typical applications for off-line power supply controller.

Description

regulated bias supply.

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

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Note: The manufacturer provides a single datasheet file (UCC1889-Unitrode.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number UCC3889
Manufacturer Unitrode
File Size 1.19 MB
Description Off-line Power Supply Controller
Datasheet download datasheet UCC3889 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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