E-L6561D

Overview

The L6561D is a power factor correction (PFC) controller from STMicroelectronics, designed for transition mode operation. It features a wide input voltage range capability and an internal start-up timer. Key electrical parameters include a micro power start-up current of 50 µA typical and a very low operating supply current of 4 mA typical. The device incorporates a 1% precision internal reference voltage at Tj = 25°C and provides soft output over-voltage protection. It utilizes mixed BCD technology to minimize power dissipation.

Feature Summary

• Integrated disable function on the ZCD pin to guarantee lower current consumption in standby mode
• Totem pole output stage capable of driving Power MOS or IGBT with source and sink currents of ±400mA
• No need for external low pass filter on the current sense due to on-chip filtering
• Superior multiplier performance enabling excellent Total Harmonic Distortion (THD) in wide input voltage applications

Applications

• Electronic lamp ballasts
• AC-DC adaptors
• Switched-mode power supplies (SMPS)

Procurement Notes

Verify the specific suffix code, as 'L6561D' typically denotes tube packaging while 'L6561D013TR' indicates tape and reel. Confirm the lifecycle status, as this component may be listed as Not Recommended for New Designs (NRND). Ensure compatibility with SOIC-8 or DIP-8 package requirements during sourcing.

Selection Notes

Select this component for designs requiring transition mode PFC control with low quiescent current. It is suitable for applications needing a wide input voltage range without external current sense filters. Consider the NRND status when planning long-term production runs.

Part Context

The L6561D is part of the L6561 series, serving as an improved version of the standard L6560 PFC controller. It maintains full compatibility with the standard version while offering enhanced performance through a superior multiplier and reduced start-up current. The device is realized in mixed BCD technology.

Replacement Considerations

The L6562 is a current-mode PFC controller operating in Transition Mode that is pin-to-pin compatible with the L6561. It offers improved performance with a -600/+800 mA totem pole gate driver and ultra-low start-up current.