LNK305PN LNK305P LNK305 LCD supply chip

Description

LNK305PN LNK305P LNK305 LCD supply chip

The LNK305PN (and its variants like LNK305P / LNK305) is an energy-efficient, off-line AC-DC switcher IC. It is widely used as a power supply chip in consumer electronics, major appliances, and LCD TV/monitor standby power boards.

• LNK305: This is the core root part number for the IC series.
• LNK305P: This was the older generation through-hole DIP-8 package variant. It is officially obsolete and no longer manufactured.
• LNK305PN: This is the modern, direct, lead-free (RoHS compliant) replacement for the LNK305P. It also comes in a standard DIP-8 through-hole package (often featuring only 7 physical pins for clearance and safety layout).

• Input Voltage Range: Universal 85 VAC to 265 VAC.
• Output Current: Up to 280 mA maximum (360 mA peak depending on configuration).
• Integrated Power MOSFET: Internal 700 V breakdown rating to withstand severe input power surges.
• Switching Frequency: 66 kHz internal oscillator.
• Supported Topologies: Buck, buck-boost, and flyback converter configurations.
• Built-in Protections: Fully integrated auto-restart for output short-circuit protection, open-loop fault safeguarding, and hysteretic thermal shutdown.