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The UCC28502DW is a Power Factor Correction (PFC) integrated circuit manufactured by Unitrode. It operates as an average current mode controller with a switching frequency of 100kHz. The device features a BICMOS process and provides a peak output drive current of 1.2A. It is housed in a 20-pin SOIC package (PDSO20). The supply voltage range is specified from 9.7V to 18V. This component is designed for power factor correction applications requiring precise current control.
Verify the RoHS status carefully, as sources indicate this specific part may be non-compliant. Confirm the manufacturer origin, noting historical ties to Unitrode and Texas Instruments. Ensure the 20-SOIC package matches your PCB footprint requirements. Validate the 9.7V to 18V supply range against your system design. Check for any specific ordering suffixes that might alter specifications.
Select this component for designs requiring average current mode PFC control. Ensure the 1.2A drive current meets the gate drive requirements of the external MOSFETs. Verify compatibility with the 100kHz operating frequency. Confirm the 20-SOIC package fits the assembly constraints. Consider the BICMOS process characteristics for noise immunity and drive strength needs.
This part belongs to the Unitrode PFC IC family. It is related to other controllers like the UCC28528 series, which offer advanced PWM/PFC combination features. The UCC28502DW represents a specific implementation focused on average current mode control with post-regulation, distinct from simpler boost controllers or valley-fill solutions.
Publicly confirmed substitute part numbers are not available in the provided source material. Cross-reference with UCC28528 series only if functional equivalence is verified through official datasheets.