L6562ATD

Overview

The L6562ATD is a current-mode Power Factor Correction (PFC) controller operating in Transition Mode (TM). It features a proprietary multiplier design for minimum Total Harmonic Distortion (THD) of AC input current. The device includes an ultra-low start-up current of ≤70 μA and low quiescent current of ≤4 mA. It offers very precise adjustable output overvoltage protection and a totem-pole gate driver capable of -600/+800mA with UVLO pull-down and voltage clamp. An on-chip filter is integrated on the current sense input.

Feature Summary

• Transition-mode control of PFC pre-regulators
• Proprietary multiplier design for minimum THD of AC input current
• Very precise adjustable output overvoltage protection
• -600/+800mA totem pole gate driver with UVLO pull-down and voltage clamp

Applications

• IEC61000-3-2 compliant SMPS (TV, desktop PC, monitor) up to 300W
• High-end AC-DC adapter/charger
• Entry level server & web server

Procurement Notes

Verify the specific suffix 'TD' against official STMicroelectronics documentation to confirm package type and tape/reel specifications. Ensure compatibility with existing PCB footprints and thermal management requirements. Confirm RoHS compliance status and environmental declarations for the specific manufacturing batch prior to integration into final designs.

Selection Notes

Select this component for applications requiring transition-mode PFC control with low standby power consumption. The integrated on-chip current sense filter simplifies external component count. Verify that the extended IC supply voltage range meets the system's operational requirements. Consider the disable function for remote ON/OFF capabilities to meet energy-saving standards.

Part Context

The L6562 is part of STMicroelectronics' PFC controller family, offering pin-to-pin compatibility with the predecessor L6561. It is realized in BCD technology and available in DIP-8/SO-8 packages. The device provides improved performance over previous generations, making it suitable for cost-effective solutions in various power supply applications.

Replacement Considerations

L6561 is the direct predecessor with pin-to-pin compatibility. L6562A is a variant with enhanced features such as lower start-up current and digital leading-edge blanking.