LNK562GN

AC DC Converters, Offline Switchers Overview

The LNK562GN is a LinkSwitch-LP AC/DC converter IC from Power Integrations, designed for low-power offline applications. It integrates a high-voltage power switch and control circuitry in an SMD-8 package. The device supports universal AC input ranging from 85 VAC to 265 VAC. It delivers up to 1.9 W of output power at 230 VAC or 1.6 W at 85 VAC. Key electrical parameters include a fixed switching frequency of 66 kHz, a maximum duty cycle of 70%, and a quiescent supply current of 220 µA. The internal MOSFET features a breakdown voltage of 700 V. Operating temperature range spans from -40°C to +150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage power switch with proprietary control logic for simplified design
• Provides comprehensive protection including cycle-by-cycle current limiting, thermal shutdown, and open-loop detection
• Features constant on-time control architecture for stable operation across varying line and load conditions

AC DC Converters, Offline Switchers Applications

• Adapters and chargers for mobile phones and tablets
• Standby power supplies for consumer electronics
• Low-power appliance power supplies
• Battery chargers for portable devices

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix (e.g., TL) against datasheet requirements to ensure correct packaging configuration such as tape and reel versus cut tape. Confirm that the selected variant meets all applicable safety certifications required for the target market. Cross-reference the manufacturer part number with distributor codes to avoid ordering errors due to similar model numbers within the LinkSwitch family.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring minimal external components and high reliability in low-power AC/DC conversion. Consider the SMD-8 package constraints for thermal management when determining PCB layout area. Evaluate the 66 kHz switching frequency against EMI requirements, as higher frequencies may necessitate additional filtering compared to lower-frequency alternatives in the same series.

AC DC Converters, Offline Switchers Part Context

The LNK562GN belongs to the LinkSwitch-LP family, which targets ultra-low standby power consumption applications. It is distinct from the standard LinkSwitch series by offering optimized performance for very low power levels while maintaining robust fault protection. This series replaces older discrete solutions by integrating both power and control functions into a single monolithic chip.

AC DC Converters, Offline Switchers Replacement Considerations

Direct pin-compatible replacements within the same family include LNK562DN (SOIC-8) and LNK562PN (DIP-B). For different power requirements, consider LNK563GN or LNK564GN. Verify that any substitute maintains the same 700V breakdown voltage and switching frequency characteristics to ensure circuit stability.