MPN:UC3843AN

The UC3843AN is a high-performance current-mode PWM controller IC from Texas Instruments, widely used in switch-mode power supplies (SMPS). It offers precise duty-cycle control, fast transient response, and excellent line/load regulation, making it ideal for offline and DC-DC converter designs.

With features like under-voltage lockout (UVLO), low start-up current, and cycle-by-cycle current limiting, the UC3843AN ensures safe, stable, and efficient power conversion.

MPN:UC3843B

The UC3843B is a current-mode PWM controller IC from STMicroelectronics, designed for high-efficiency switch-mode power supplies (SMPS). It provides precise duty-cycle control, fast dynamic response, and excellent line and load regulation, making it ideal for flyback, forward, and DC-DC converter designs.

With built-in features such as under-voltage lockout (UVLO), low start-up current, and cycle-by-cycle current limiting, the UC3843B ensures safe, stable, and reliable power control in both consumer and industrial power systems.

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.