LNK304P

AC DC Converters, Offline Switchers Overview

The LNK304PN is a LinkSwitch-TN series offline switcher designed for non-isolated power supplies. It integrates a 700V power MOSFET, oscillator, and simple on/off control scheme. The device operates with an input voltage range of 85 VAC to 265 VAC and features a switching frequency of 66 kHz. Output current capabilities are specified at 120 mA in MDCM and 170 mA in CCM modes. It includes frequency jittering, cycle-by-cycle current limiting, and thermal shutdown protection within a DIP-8 package.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700V power MOSFET with high-voltage startup circuitry
• Employs skip-cycle regulation for stable output voltage maintenance
• Includes automatic restart protection against short-circuit and open-loop faults
• Features frequency jittering to reduce electromagnetic interference

AC DC Converters, Offline Switchers Applications

• Replacement for linear and capacitor dropper power supplies
• LED driver circuits
• Household appliance power modules
• Industrial control systems

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix (PN) corresponds to the required through-hole DIP-8 packaging configuration. Confirm that the component meets RoHS standards and JEDEC moisture sensitivity levels for your assembly process. Ensure the selected variant matches the intended operating temperature range requirements.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring replacement of low-current linear or capacitive dropper supplies. It supports both discontinuous and continuous conduction modes. Verify compatibility with the target output current needs of 120mA or 170mA. Consider the integrated protection features for simplified design implementation.

AC DC Converters, Offline Switchers Part Context

Part of the LinkSwitch-TN family launched in 2004. Designed to replace older non-isolated topologies. Offers system cost parity while improving efficiency and performance. Widely used in consumer electronics and industrial applications requiring compact power solutions.

AC DC Converters, Offline Switchers Replacement Considerations

Direct pin-compatible alternatives within the same family include LNK304DG for surface mount applications. Verify thermal characteristics and package dimensions when substituting with other variants.