UC2879DW

$7.58

Description：UC2879 PHASE SHIFT RESONANT CONT
Series：-
Mfr：Unitrode
Package：Bulk

SKU:ff61378c019b Category: AC DC Converters, Offline Switchers Brand: Unitrode

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Product introduction

UC2879DW is listed in the AC DC Converters, Offline Switchers range at ChipApex. The manufacturer field lists Unitrode. Its product description is UC2879 PHASE SHIFT RESONANT CONT. Review the specifications below when checking this part for your BOM.

AC DC Converters, Offline Switchers specifications for UC2879DW

Description：UC2879 PHASE SHIFT RESONANT CONT
Series：-
Mfr：Unitrode
Package：Bulk
Output Isolation：Non-Isolated
Internal Switch(s)：-
Voltage - Breakdown：-
Topology：Full-Bridge
Voltage - Start Up：-
Voltage - Supply (Vcc/Vdd)：9.25V ~ 20V
Duty Cycle：50%
Frequency - Switching：300kHz
Fault Protection：Current Limiting
Control Features：Frequency Control, Soft Start, Sync
Operating Temperature：-40°C ~ 85°C (TA)
Package / Case：20-SOIC (0.295", 7.50mm Width)
Supplier Device Package：20-SOIC
Mounting Type：Surface Mount
Grade：-
Qualification：-

AC DC Converters, Offline Switchers datasheet and documents for UC2879DW

UC2879DW

AC DC Converters, Offline Switchers Overview

The UC2879DW is a high-performance power factor controller manufactured by Texas Instruments, housed in a 20-pin SOIC package. It integrates a voltage-mode PWM controller with an active current-shaper to achieve unity power factor and low harmonic distortion in offline switching power supplies. The device supports half-bridge or full-bridge topologies and includes features such as cycle-by-cycle peak current limiting, programmable soft-start, and undervoltage lockout.

AC DC Converters, Offline Switchers Feature Summary

Integrates a voltage-mode PWM controller with an active current-shaper for high power factor correction
Supports both half-bridge and full-bridge converter topologies
Includes built-in cycle-by-cycle peak current limiting and programmable soft-start functionality

AC DC Converters, Offline Switchers Applications

Offline switching power supplies requiring high power factor correction
Universal input AC-DC converters
Power factor pre-regulators for telecom and computer equipment

AC DC Converters, Offline Switchers Procurement Notes

Verify the manufacturer designation on the component marking, as Unitrode was acquired by Texas Instruments. Ensure the suffix 'DW' corresponds to the 20-SOIC package variant. Confirm RoHS compliance status through official documentation, as legacy stock may differ from current production runs.

AC DC Converters, Offline Switchers Selection Notes

Select this component when designing offline power supplies that require integrated power factor correction and high efficiency. It is suitable for applications needing precise current shaping and support for bridge topologies. Evaluate thermal requirements for the SOIC package based on the specific power dissipation of the design.

AC DC Converters, Offline Switchers Part Context

The UC2879 belongs to the UC287x series of power factor controllers. Originally developed by Unitrode, the product line is now managed by Texas Instruments following their acquisition. This series is designed to meet stringent harmonic distortion regulations for universal input power supplies.