LNK632DG-TL

LNK632DG-TL is a Power Integrations LinkSwitch-TL offline switcher IC. It combines a high-voltage MOSFET, startup, and control circuitry for simple, low‑cost flyback power supplies.
Key points
- Purpose: drives small offline AC‑DC adapters and auxiliary supplies in consumer electronics.
- Packaging: DG-TL indicates a Tape & Reel version of the device.
- Features: built‑in high‑voltage MOSFET (typically ~700 V), primary‑side regulation options, low standby power, current limiting, and protection (fault/thermal).
- External parts: minimalist BOM (transformer, rectifier, filter capacitors, few passive components).
- Design approach: often used with primary‑side regulation (no optocoupler needed in many configurations) per Power Integrations reference designs.
- Applications: 85–265 VAC input, low‑to‑mid power outputs (a few watts to several watts) such as wall warts, USB chargers, and auxiliary rails.
For exact electrical specs, package details, and recommended app circuits, consult the LNK632DG-TL datasheet and Power Integrations reference designs.

Here are the key features of LNK632DG-TL (Power Integrations):
- Integrated high-voltage MOSFET (600V class) and primary-side controller
- Flyback converters optimized for offline/off-grid power supplies
- Fixed-frequency operation with valley switching for improved efficiency and EMI
- Very low standby power and high overall efficiency
- Built-in protections: current/short-circuit protection, overvoltage protection, thermal shutdown
- Soft-start to minimize inrush and stress on components
- Minimal external components required for simple, compact designs
- Tape-and-reel packaging (TL) for automated assembly; DG variant indicates package/lead options
Note: Exact output power range and performance vary with topology and external components.

LNK632DG-TL comes in an 8‑pin SOP/DIP‑8 style package (surface‑mount variant), supplied in Tape & Reel (TL) packaging.

- Pin count: 8 pins (8-pin package, TL = Tape-and-Lead).
- Function: Off-line flyback switch with an integrated high-voltage MOSFET. Primary-side regulator used in/off-line power supplies. Key pins: DRAIN (HV input), SOURCE (MOSFET return), VCC (IC supply), GND (control ground), FB (feedback for regulation), IS (current-sense). The remaining pins are typically No-Connect (NC).

- Manufacturer: Power Integrations.
- What kind of company: A semiconductor company that designs and markets high-voltage switch-mode power supply ICs and other power-management ICs (fabless), specializing in energy-efficient offline power conversion (e.g., LinkSwitch/TinySwitch families).

- Low-power offline switch-mode power supplies with isolated flyback (primary-side regulation)
- Wall adapters and USB chargers
- LED lighting driver supplies
- Small battery chargers for portable devices
- Auxiliary power supplies for consumer/industrial equipment
Note: LNK632DG-TL is a high-voltage integrated switch (TinySwitch-II) suitable for compact, cost-effective PSUs.