MPN:UC3854N

The UC3854N is a high-performance Power Factor Correction (PFC) controller IC from Texas Instruments, designed for active PFC pre-regulator circuits in AC-DC power supplies. Using average current-mode control, it achieves near-unity power factor and low harmonic distortion, helping systems comply with international power quality standards.

It integrates voltage and current error amplifiers, UVLO protection, and high-current gate drive, making it ideal for SMPS front-end stages, industrial power supplies, and telecom equipment.

MPN:ULN2002A

The ULN2002A by STMicroelectronics is a 7-channel Darlington transistor array designed for high-current switching applications. Ideal for relay drivers, stepper motors, LED arrays, and solenoids, it supports up to 500mA per channel and operates from 5V to 50V, making it a reliable solution for industrial and electronic projects.

MPN:ULN2803APG

The ULN2803APG is an 8-channel Darlington transistor array IC from Toshiba, designed to interface TTL/CMOS logic with high-current, high-voltage loads. Each channel can drive up to 500 mA, making it ideal for controlling relays, solenoids, stepper motors, LEDs, and lamps.

It includes integrated flyback diodes for safe operation with inductive loads, reducing external component count and improving system reliability.