LNK304GN-TL

AC DC Converters, Offline Switchers Overview

The LNK304GN-TL is a LinkSwitch-TN series offline converter IC designed for non-isolated power supplies. It integrates a 700V power MOSFET, oscillator, and control circuitry into an 8-SMD package. The device operates with an input voltage range of 85 VAC to 265 VAC and provides a typical output voltage of 12 V. Output current capabilities are 120 mA in MDCM and 170 mA in CCM at 230 VAC input. It features a switching frequency of 66 kHz with frequency jittering, a maximum duty cycle of 72%, and a quiescent supply current of 200 uA. The component supports an operating temperature range from -40°C to +150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700V power MOSFET with high-voltage switch current source and simple on/off control scheme
• Includes automatic restart circuitry for protection against short circuits, open loops, and overloads
• Utilizes frequency jittering technology to reduce electromagnetic interference emissions
• Features built-in hysteresis thermal shutdown to protect the device during excessive temperature conditions

AC DC Converters, Offline Switchers Applications

• Replacement for linear and capacitor dropper power supplies
• LED driver circuits
• General-purpose household appliances
• Industrial control systems

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'TL' indicates tape and reel packaging configuration when sourcing. Confirm RoHS compliance status through official manufacturer documentation or certified datasheets prior to integration. Ensure the selected variant matches the required SMD-8 package footprint for PCB layout compatibility. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring replacement of low-current linear regulators or capacitive droppers. It is suitable for applications needing high efficiency and reduced component count. Consider the 170 mA continuous mode output limit when sizing the load. Evaluate thermal management requirements given the wide operating temperature range and integrated thermal shutdown feature.

AC DC Converters, Offline Switchers Part Context

The LNK304GN-TL belongs to the LinkSwitch-TN family introduced by Power Integrations in January 2004. This series was developed to replace traditional non-isolated power topologies with lower system costs and higher performance. The GN suffix specifically denotes the surface-mount SMD-8 package variant within the broader LNK304 product line.

AC DC Converters, Offline Switchers Replacement Considerations

Direct pin-compatible replacements include LNK304DN-TL (SO-8C package) and LNK304PN (DIP-B package). These variants share identical electrical characteristics but differ in physical mounting style. Verify package dimensions and thermal dissipation paths when substituting between surface-mount and through-hole options.