LNK305DG-TL – Power Integrations LinkSwitch-TN Energy-Efficient Offline Switcher IC

Quick Answer The LNK305DG-TL is a highly integrated offline switcher IC from Power Integrations' LinkSwitch-TN family. It combines a 700V power MOSFET with an on/off controller in a compact SO-8C package. Designed for non-isolated buck, buck-boost, and flyback topologies, it delivers up to 175 mA (MDCM) / 280 mA (CCM) output current. It offers the lowest component count and most cost-effective solution to replace linear regulators and capacitor-fed (cap dropper) power supplies in low-power offline applications.

Current Stock at ICMASS: Strong inventory available for immediate worldwide delivery.

Key Specifications

[Download Official LinkSwitch-TN Datasheet PDF]

Why Choose LNK305DG-TL?

• Lowest component count and cost solution for non-isolated supplies
• Integrated 700V MOSFET with simple On/Off control
• Excellent line and load regulation
• High bandwidth for fast turn-on with minimal overshoot
• Auto-restart protection for output faults
• Very low standby power consumption
• Pb-free, RoHS compliant, and halogen-free
• Ideal replacement for linear regulators and cap droppers

Typical Applications

• LED drivers and LED lighting (offline)
• Appliance control and industrial controls
• Smart home and IoT devices
• Metering and utility applications
• White goods auxiliary power
• Non-isolated buck converters (5V, 12V, 15V outputs)
• Battery chargers (low power)
• Consumer electronics standby power supplies

LNK305DG-TL Alternatives & Cross Reference Popular Alternatives:

• LNK304DG / LNK306DG (adjacent current versions)
• LNK305PN (DIP-8B package equivalent)
• LNK302DG (smaller current)
• TinySwitch or LinkSwitch-XT series for isolated needs

Comparison Table:

Purchasing Information at ICMASS

• Stock Status: Strong inventory available
• MOQ: 100 pieces (samples welcome)
• Lead Time: 1-3 days for stock orders
• Shipping: Fast global delivery (DHL, UPS, FedEx)
• Quality Guarantee: 100% genuine Power Integrations components

Get Competitive Quote – Contact us for bulk pricing and technical support.

Frequently Asked Questions (FAQ)

Q1: What is the LNK305DG-TL mainly used for? A: It is designed for cost-effective non-isolated offline buck, buck-boost, and flyback converters up to 280mA output current.

Q2: What is the maximum output current? A: 175 mA in MDCM and 280 mA in CCM at 230 VAC (output power depends on output voltage).

Q3: Is the LNK305DG-TL isolated or non-isolated? A: Non-isolated topology (buck, buck-boost, flyback).

Q4: What package does the LNK305DG-TL use? A: SO-8C (DG) surface mount package, supplied in Tape & Reel.

Q5: What is the integrated MOSFET voltage rating? A: 700 V for universal input operation.

Q6: Is it suitable for universal input? A: Yes, supports 85-265 VAC universal input.

Q7: What protection features does it include? A: Output short circuit, open loop, over temperature with auto-restart.

Q8: Do you have real stock of LNK305DG-TL? A: Yes, we maintain good inventory levels for fast delivery.

Q9: What is the typical switching frequency? A: 66 kHz.

Q10: Can you provide reference designs or layout recommendations? A: Yes, we supply official Power Integrations datasheet, application notes, and design support.

Q11: Do you offer volume pricing? A: Yes. Competitive tiered pricing is available for quantities from 1K to 100K+.

Q12: How does LNK305DG compare to LNK306DG? A: LNK305DG provides medium output current (175/280mA), while LNK306DG offers higher current (225/360mA) for greater power non-isolated applications.

Related Products

• LNK30xDG LinkSwitch-TN Family
• Other LinkSwitch Series (LinkSwitch-II, LinkSwitch-XT)
• Power Integrations Offline Switchers (TinySwitch, TOPSwitch)
• Non-isolated AC/DC converter ICs