LNK6775K-TL

LNK6775K-TL is a Power Integrations LinkSwitch offline flyback switch with an integrated high-voltage MOSFET and PWM controller. The TL suffix means Tape & Reel packaging.
Key features:
- 700V integrated MOSFET, fixed-frequency current-mode control
- Built-in startup, overcurrent/overtemperature protection, undervoltage lockout
- Universal input 85–265 VAC; low standby power
- Often supports primary-side regulation in PSR designs (no opto coupler required in suitable topologies)
Typical use:
- Compact, low-power isolated AC-DC supplies such as wall adapters, USB chargers, and LED drivers (a few watts, depending on transformer design)
External parts:
- Minimal BOM beyond transformer, input/output capacitors, and a few passive components
Why use:
- Simplified design, small footprint, good efficiency, reliable protection
For exact electrical specs, app circuit, and layout guidelines, consult the LNK6775K-TL datasheet.

Direct equivalents come from the Power Integrations LinkSwitch-TL family. There is no single universal cross-reference to other manufacturers. The closest substitutes are other TL‑series devices with the same power rating and pinout (e.g., other LNK677xK-TL variants). For an exact substitute, use Power Integrations’ cross‑reference tool or distributor cross‑references (DigiKey/Mouser) to match Vin range, Vout, Iout, package, and timing.

Here are the typical features of LNK6775K-TL (Power Integrations LinkSwitch-TN family):
- Off-line flyback controller with integrated high-voltage MOSFET (600V+)
- Universal input range (AC mains) with high efficiency and good light-load performance
- Primary-side regulation (PSR) for simple feedback; opto-isolator option depends on design
- Fixed-frequency operation with efficient valley switching
- Very low standby/no-load power
- Integrated protection: current limit, overvoltage protection, thermal shutdown, UVLO
- Minimal external components; compact, cost-effective designs
- Isolation between input and output; complies with safety standards
- Packaging: -TL indicates Tape & Reel; 8-pin package (suitable for automated assembly)
Note: Exact specification values (voltage, frequency, efficiency) are provided in the datasheet for precise design.

- Pin count: 8 pins (8-pin SO/DIP-8 package).
- Function: LNK6775K-TL is a LinkSwitch-TL primary-side regulator with an integrated high-voltage MOSFET for offline flyback converters. It provides PSR (primary-side regulation) for isolated AC-DC supplies and includes protection features (overcurrent, UVLO, thermal shutdown, auto-restart); no opto-isolator feedback is required.

- Manufacturer: Power Integrations.
- What kind of company: A semiconductor company that designs and manufactures high-voltage, energy-efficient switch-mode power supply ICs (offline power conversion ICs, such as LinkSwitch/TinySwitch families) used in adapters, chargers, and power supplies.

LNK6775K-TL is a high-voltage, off-line flyback switcher for low-power, isolated power supplies. Typical applications include:
- Universal-input AC-DC adapters and USB chargers
- Battery chargers for mobile devices
- Low-to-mid-power LED driver circuits
- Compact power modules for consumer electronics, IoT/telecom equipment
It’s suitable for minimalist, high-efficiency external power supplies with a small footprint and reduced component count.

LNK6775K-TL is in an 8-pin surface-mount SO‑8 package (Tape & Reel).