UC3843BD1 DC-DC Switching Controller IC by STMicroelectronics | Boost & Flyback Topologies 2025-04-20 Discover the UC3843BD1 by STMicroelectronics - a high-performance DC-DC switching controller IC for boost and flyback topologies. Features 7.6V-30V input, 500kHz frequency, and 96% duty cycle. Ideal for power supplies, telecom, and industrial applications.