LNK407LG

LED Driver IC Overview

The LNK407LG is a LinkSwitch-TN2 integrated offline switcher from Power Integrations, designed for low-power AC-DC flyback converters. It combines a high-voltage power MOSFET with an intelligent controller in a compact package. The device features a breakdown voltage of 700V and operates at a switching frequency of 66 kHz. It supports a maximum duty cycle of 54% and delivers up to 13W of output power. The IC includes comprehensive protection mechanisms such as over-current, over-temperature, and open-loop fault detection. It functions within a junction temperature range of -40°C to 150°C and utilizes an 8-SOIC surface-mount package.

LED Driver IC Feature Summary

• Integrates a 700V power MOSFET with a high-performance controller in a single low-pin-count package
• Provides precise primary-side regulation without requiring optocouplers or secondary-side feedback components
• Includes built-in EcoSmart technology for ultra-low no-load power consumption
• Features automatic restart and hiccup mode for robust fault protection

LED Driver IC Applications

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

LED Driver IC Procurement Notes

Verify the specific suffix (e.g., DG, PG) against the required package type (SOIC or DIP) when ordering. Confirm that the component meets the intended thermal and electrical requirements for the target application. Ensure compliance with RoHS and REACH directives if applicable to the manufacturing region. Cross-reference the manufacturer's latest datasheet for any updates on recommended operating conditions or pin configurations prior to finalizing the bill of materials.

LED Driver IC Selection Notes

Select the LNK407LG for applications requiring simplified design and reduced component count in low-power isolated converters. Its primary-side regulation capability eliminates the need for optocouplers, enhancing reliability. Consider the 700V rating for standard universal input voltages. Evaluate the thermal performance within the 150°C junction limit. This device is suitable where cost efficiency and board space are critical constraints.

LED Driver IC Part Context

The LNK407LG belongs to the LinkSwitch-TN2 family, which focuses on high integration and energy efficiency. Unlike previous generations, TN2 devices offer improved accuracy and lower standby power. This series targets the competitive low-power adapter market by reducing external component requirements. It complements higher-power LinkSwitch-HP and LED-specific LYTSwitch families within Power Integrations' portfolio.

LED Driver IC Replacement Considerations

Direct replacements may include other LinkSwitch-TN2 variants with different current limits or packages, such as LNK404DG or LNK406DG. Verify pin compatibility and electrical parameters before substitution. Generic flyback controllers require additional external components and do not offer equivalent integration levels.