uC3844B,High-Performance Current-Mode PWM Controller,SMD

The UC3844B - SMD is a high-performance, fixed-frequency current-mode PWM controller designed for off-line and DC-DC converter applications. With a built-in oscillator and cycle-by-cycle current limiting, the UC3844B ensures precise power regulation while simplifying designs by reducing the need for external components. The controller supports up to 500kHz switching frequency, making it suitable for high-speed, high-efficiency applications in industrial, telecommunication, and consumer electronics systems.

Featuring integrated protection mechanisms such as undervoltage lockout, output deadtime control, and cycle-by-cycle current limiting, the UC3844B guarantees reliable operation even under challenging load conditions. It offers adjustable deadtime from 50% to 70%, ensuring optimized switching performance in demanding power environments.

The UC3844B is housed in a compact SOIC-8 package, making it ideal for space-constrained designs that require surface-mount components. Its combination of high-performance, integrated features, and efficient design makes the UC3844B an excellent choice for modern power supply and converter applications.

• Current-Mode PWM Controller: Provides precise control for off-line and DC-DC converter applications with minimal external components.
• Fixed-Frequency Operation: Integrated oscillator offers accurate frequency control, supporting up to 500kHz switching frequency.
• Integrated Protection Features: Includes undervoltage lockout, cycle-by-cycle current limiting, and output deadtime control for enhanced reliability.
• Adjustable Deadtime Control: Allows deadtime adjustment from 50% to 70% for optimal switching performance.
• High-Speed Performance: Ideal for high-efficiency power supplies in industrial, telecommunication, and consumer electronics.
• Compact SOIC-8 Package: Space-saving SMD package for easy integration into surface-mount designs.