STMicroelectronics

L4986B  

Power Factor Correction ICs

L4986B Description

The L4986B is a Continuous Conduction Mode (CCM) Power Factor Correction (PFC) controller designed for high-voltage applications. Manufactured by STMicroelectronics, this device is part of the Power Management Integrated Circuit (PMIC) category and offers robust performance in a surface-mount package. The L4986B operates within a supply voltage range of 10V to 24.5V and features a switching frequency of 130kHz, ensuring efficient power conversion. With a startup current of only 400 µA, it is optimized for low-power consumption during initialization. The product is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards. Packaged in a tube, the L4986B has a Moisture Sensitivity Level (MSL) of 3, allowing for 168 hours of exposure before reflow soldering.

L4986B Features

• Continuous Conduction Mode (CCM): The L4986B operates in CCM, ensuring high efficiency and power density, making it suitable for demanding applications requiring consistent power delivery.
• Wide Supply Voltage Range: With a supply voltage range of 10V to 24.5V, the L4986B can accommodate a variety of input power sources, enhancing its versatility.
• High Switching Frequency: The 130kHz switching frequency allows for smaller inductors and capacitors in the power conversion circuit, reducing the overall size and cost of the design.
• Low Startup Current: A startup current of 400 µA ensures minimal power consumption during the initialization phase, contributing to energy efficiency.
• Environmental Compliance: The L4986B is REACH unaffected and RoHS3 compliant, ensuring it meets the latest environmental and safety regulations.
• Surface Mount Packaging: The surface-mount package type facilitates easy integration into modern PCB designs, enhancing reliability and reducing assembly costs.
• Moisture Sensitivity Level (MSL) 3: The MSL 3 rating allows for 168 hours of exposure before reflow soldering, providing flexibility in manufacturing processes.

L4986B Applications

The L4986B is ideal for a range of high-voltage power management applications, including:

• AC-DC Power Supplies: Suitable for high-efficiency power supplies in consumer electronics, industrial equipment, and telecommunications infrastructure.
• Uninterruptible Power Supplies (UPS): Provides reliable power factor correction for UPS systems, ensuring stable power delivery during critical operations.
• Solar Inverters: Enhances the efficiency and reliability of solar inverters, contributing to sustainable energy solutions.
• Motor Drives: Ideal for motor control applications where high efficiency and power density are crucial.
• Telecom Equipment: Ensures stable power delivery in telecom equipment, supporting reliable communication infrastructure.

Conclusion of L4986B

The L4986B from STMicroelectronics stands out as a high-performance CCM PFC controller tailored for demanding power management applications. Its wide supply voltage range, high switching frequency, and low startup current make it a versatile and efficient solution. The device’s environmental compliance and surface-mount packaging further enhance its appeal for modern electronics. Whether used in AC-DC power supplies, UPS systems, solar inverters, motor drives, or telecom equipment, the L4986B delivers reliable performance and efficiency. Its unique features and advantages over similar models make it an ideal choice for engineers seeking a robust PFC solution.

L4986B Documents

Download datasheets and manufacturer documentation for L4986B

Datasheets :

L4986