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UCC3819A - Power Factor Preregulator

Download the UCC3819A datasheet PDF. This datasheet also covers the UCC2819A variant, as both devices belong to the same power factor preregulator family and are provided as variant models within a single manufacturer datasheet.

General Description

The UCC2819A/UCC3819A provides 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 the ac-input line voltage.

Key Features

  • D Controls Boost Preregulator to Near-Unity Power Factor D World Wide Line Operation D Over-Voltage Protection D Accurate Power Limiting D Average Current Mode Control D Improved Noise Immunity D Improved Feed-Forward Line Regulation D Leading Edge Modulation D 150-µA Typical Start-Up Current D Low-Power BiCMOS Operation D 10.8-V to 17-V Operation D Programmable Output Voltage (Tracking Boost Topology) BLOCK.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (UCC2819A-etcTI.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Texas Instruments

Part Number Description
UCC3819 Power Factor Preregulator
UCC3810 BiCMOS controller
UCC3813-0 PWM
UCC3813-1 PWM
UCC3813-2 PWM

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
UCC2819A UCC3819A ą SLUS579 − OCTOBER, 2003 PROGRAMMABLE OUTPUT POWER FACTOR PREREGULATOR FEATURES D Controls Boost Preregulator to Near-Unity Power Factor D World Wide Line Operation D Over-Voltage Protection D Accurate Power Limiting D Average Current Mode Control D Improved Noise Immunity D Improved Feed-Forward Line Regulation D Leading Edge Modulation D 150-µA Typical Start-Up Current D Low-Power BiCMOS Operation D 10.8-V to 17-V Operation D Programmable Output Voltage (Tracking Boost Topology) BLOCK DIAGRAM OVP/EN 10 DESCRIPTION The UCC2819A/UCC3819A provides 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 the ac-input line voltage.