L6562ADTR

Overview

The L6562ADTR is a current-mode Power Factor Correction (PFC) controller operating in Transition Mode (TM). It features an ultra-low start-up supply current of 30 µA and a maximum quiescent operating current of less than 5 mA. The device supports an extended IC supply voltage range from 10.5 V to 22.5 V. It utilizes a proprietary multiplier design for minimum Total Harmonic Distortion (THD) and includes a disable function for remote ON/OFF control. The output stage provides a source current of 600 mA and a sink current of 800 mA, suitable for driving high-current MOSFETs or IGBTs.

Feature Summary

• Transition-mode current-mode control with proprietary multiplier for low THD
• Ultra-low power consumption with 30 µA start-up current and <5 mA operating current
• Totem-pole gate driver capable of 600 mA source and 800 mA sink currents
• Two-step overvoltage protection for safe handling of startup and load-disconnection events

Applications

• PFC pre-regulators for SMPS compliant with EN61000-3-2 standards
• High-end AC-DC adapters and chargers
• Entry-level server and web server power supplies
• Constant current inverse buck LED drivers

Procurement Notes

Verify the specific suffix 'ADTR' against the manufacturer's official datasheet to confirm package type and tape-and-reel configuration. Ensure compatibility with required thermal management and PCB layout guidelines for SOIC-8 packages. Cross-reference pinout with predecessor models like L6561 if replacing existing designs. Confirm RoHS compliance status for the specific manufacturing batch.

Selection Notes

Select this component for applications requiring low standby power and wide input voltage ranges. It is suitable for designs needing high peak gate drive currents for efficient switching. Consider its transition-mode operation for cost-effective solutions up to moderate power levels. Evaluate the fixed-off-time control capability if continuous conduction mode is desired at higher powers.

Part Context

The L6562ADTR belongs to the L6562 family of PFC controllers by STMicroelectronics. It is pin-to-pin compatible with the L6561 and original L6562, offering improved performance metrics such as lower start-up current and enhanced linearity. The 'A' variant typically denotes updated specifications or revisions within the product line, maintaining backward compatibility while optimizing efficiency and distortion characteristics.

Replacement Considerations

L6561 is a pin-compatible predecessor with similar functionality but potentially different electrical limits. L6562 is the base model; verify if the 'A' revision offers necessary improvements. L6562ATDTR shares the same core controller but may differ in temperature grade or packaging details.