LNK3205G-TL

LNK3205G-TL is Power Integrations’ LinkSwitch-TL offline switcher IC. It integrates a high-voltage MOSFET and a primary-side PWM controller to drive flyback power supplies, designed for small, low-cost AC‑DC adapters and LED drivers.
Key points:
- Built-in 700 V (approx.) HV MOSFET with fixed-frequency, current-mode control.
- Designed for universal input (roughly 85–265 VAC) and low standby power.
- Includes protections: current limit, thermal shutdown, and overvoltage protection.
- Used in simple flyback topologies with minimal external components; feedback via optocoupler or primary-side regulation depending on design.
- Typical applications: compact 5 W class offline supplies (phone/tablet chargers, small adapters, LED drivers).
- Packaging: TL denotes Tape & Reel; G indicates RoHS/lead-free.
In short, LNK3205G-TL offers a compact, cost-effective solution for building small offline flyback supplies with good efficiency and protection features.

Pin count: 6 pins (in SOT-23-6/TL package).
Function: An integrated primary‑side switch for off‑line flyback SMPS. It contains a high‑voltage MOSFET (≈650 V) plus startup, current‑limit, and regulation circuitry, used in AC‑DC adapters without needing an opto‑coupler.

- Manufacturer: Power Integrations.
- What kind of company: A semiconductor company that designs and markets high-voltage switch-mode power-supply ICs (off-line power conversion, adapters, chargers). HQ in San Jose, California, with global operations.

LNK3205G-TL is used for low-power offline flyback power supplies. Typical applications include:
- Standalone wall adapters/USB chargers for mobile devices
- Low/mid-power LED lighting drivers
- Small, cost-effective AC-DC power supplies for consumer electronics, battery chargers, and IoT devices
- Compact power modules requiring minimal external components and good standby performance
Note: it's a high-voltage primary-side regulator with an integrated MOSFET intended for isolated, offline SMPS in the ~5 W class.

8-pin SO-8 surface-mount package (Tape & Reel). Lead-free/RoHS-compliant.