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The UCC2818DTR is a BiCMOS power factor preregulator controller manufactured by Texas Instruments. It operates in average current mode to provide high power factor and low total harmonic distortion for AC-DC front ends. The device supports a fixed switching frequency of 250 kHz and functions within an operating temperature range of -40°C to +85°C. It is housed in a 16-pin SOIC-Narrow package with surface mount installation.
Verify the specific suffix DTR against the manufacturer datasheet to confirm tape-and-reel packaging and pinout compatibility. Ensure the design environment accommodates the specified 250 kHz switching frequency and the narrow SOIC thermal requirements. Cross-reference the AEC qualification status if automotive reliability standards are mandatory for the target application.
Select this component when a fixed 250 kHz operation meets the electromagnetic interference constraints. The 16-pin SOIC-Narrow form factor suits designs requiring moderate pin counts without excessive board space consumption. Evaluate the -40°C to +85°C industrial temperature rating against ambient conditions to ensure adequate thermal headroom for the enclosure.
This part belongs to the UCC2818 series of power factor controllers, designed as preregulators for universal line applications. It complements other Texas Instruments PMICs by providing the front-end PFC stage, often paired with downstream DC-DC converters to achieve complete power system efficiency and compliance with regulatory standards.
It utilizes average current mode control to regulate the boost inductor current.
Standard versions like the UCC2818DTR are not explicitly listed as AEC-Q100 qualified; check the specific datasheet revision or consider the UCC2818AQDRQ1 variant for automotive use.