STMicroelectronics

L6561D

L6561D Description

The L6561D, manufactured by STMicroelectronics, is a power factor correction (PFC) controller designed for discontinuous transition mode applications. This surface-mount IC operates within a supply voltage range of 11V to 18V and is compliant with the ROHS3 directive. It is packaged in a tube and has a moisture sensitivity level (MSL) of 1, indicating unlimited storage time before baking is required. While the product status indicates that it is not intended for new designs, it remains a viable option for existing applications.

L6561D Features

• Discontinuous Mode Operation: The L6561D operates in a discontinuous mode, which is beneficial for applications where high efficiency and low harmonic distortion are required.
• Voltage Supply Range: With a supply voltage range of 11V to 18V, the L6561D can be used in a variety of power supply systems.
• Low Startup Current: A startup current of only 50 µA ensures minimal power consumption during initialization, which is crucial for energy-efficient designs.
• REACH Compliance: The L6561D is REACH unaffected, meaning it does not contain substances of very high concern (SVHCs) listed under the European Union's REACH regulation.
• RoHS3 Compliance: This IC adheres to the RoHS3 directive, which restricts the use of hazardous substances in electronic products.
• MSL Level 1: The L6561D has an MSL of 1, which means it is not sensitive to moisture and does not require special handling or baking before use.

L6561D Applications

The L6561D is ideal for applications where power factor correction is crucial for meeting energy efficiency standards. Some specific use cases include:

• AC-DC Power Supplies: For power supplies in consumer electronics, such as televisions, computers, and home appliances, where high power factor and low harmonic distortion are essential.
• Industrial Power Systems: In industrial settings where power factor correction can help reduce energy costs and improve the stability of the power grid.
• Telecommunications Equipment: For power supplies in telecommunications infrastructure, where reliability and efficiency are critical.

Conclusion of L6561D

The L6561D from STMicroelectronics is a robust PFC controller suitable for a range of applications where power factor correction is necessary. Its discontinuous mode operation, combined with low startup current and compliance with environmental regulations, makes it a reliable choice for existing designs. While it is not recommended for new designs, the L6561D continues to offer performance benefits in its intended applications.