STMicroelectronics Power Factor Controller IC, SOIC Package, 20-Pin, 115 kHz, 19.5V Max Supply L4981BD

STMicroelectronics L4981BD Power Factor Controller IC is engineered to deliver precise power factor correction in switch mode power supplies (SMPS) across a wide mains voltage range. Designed for industrial, commercial, and power management applications, this integrated circuit combines versatility with robust protection mechanisms, making it an ideal solution for advanced power supplies.

This controller operates in both Continuous Current Mode (CCM) and Transition Mode (TM), supporting efficient, wide-range mains operation. With a switching frequency of 115 kHz and a supply voltage range from 2.5V to 19.5V, it offers flexibility for various designs, minimizing energy losses and optimizing power delivery.

The L4981BD features a surface-mount SOIC package with 20 pins, suitable for compact PCB layouts. Its start-up supply current is only 0.3mA, maximizing energy savings at initial power-up, while its maximum source and sink currents (10mA and 20000μA, respectively) enable stable performance across varying load conditions. Additional features include advanced protection for SMPS robustness, reducing the need for external protection components.

With operating temperature support from -40°C to 125°C, it fits challenging environments, and its height and length (2.35mm/13mm) allow easy integration into industrial and laboratory electronic assemblies. Automotive standard compliance is not present, but it is ideal for electronics, manufacturing, and power management IC projects.

The IC is recommended for use in AC/DC converter circuits, power factor correction modules, and systems requiring efficient power distribution and regulation. Its robust feature set ensures reliability and compliance with stringent performance requirements for modern power electronic designs.

Operates at a switching frequency of 115 kHz for efficient power management. Wide supply voltage range up to 19.5V maximizes design flexibility. 20-pin SOIC surface-mount package suitable for automated assembly. Low start-up supply current significantly reduces operational energy requirements.

Maximum source and sink current facilitate varied circuit applications. Supports both CCM and TM operation enhancing SMPS robustness. Advanced protection features minimize external circuitry. Find more Power Factor Controller ICs and advanced power management solutions from STMicroelectronics on EnvMart.