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13 pcs
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13 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The UC2854N from Texas Instruments is a high-power factor preregulator IC designed to improve the efficiency and performance of AC-DC power supplies. It actively corrects power factor, ensuring that the current drawn from the power line is nearly sinusoidal, thereby minimizing distortion to less than 5% and achieving a power factor of up to 0.99.
This device utilizes average current-mode control for stable, fixed-frequency PWM operation, offering low noise sensitivity and robust performance across worldwide line voltage and frequency ranges (75 V to 275 V, 50 Hz to 400 Hz). Key features include feedforward line regulation, a low-offset analog multiplier and divider, and a 1-A totem-pole gate driver compatible with power MOSFETs. It also incorporates a precision voltage reference.
The UC2854N is suitable for various applications, including offline AC-to-DC converters, medical, industrial, telecom, and IT power supplies, as well as uninterruptible power supplies (UPS) and appliances. It is available in a 16-pin SOIC package, designed for surface mounting.
Note: This product is not recommended for new designs. Consider alternate products like the UCC28180 for new projects.
The UC2854N operates from a line voltage of 75 to 275 V.
The UC2854N is offered in a 16-pin SOIC package.
The UC2854N operates from -40°C to 85°C.
The UC2854N boosts power factor to 0.99.
The UC2854N limits line-current distortion to less than 5%.