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lnk3206d-tl

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by Ray

POWER INTEGRATIONS AC-DC Controllers and Regulators, SO-7. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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LNK3206D-TL

POWER INTEGRATIONS · AC-DC Controllers and Regulators · SO-7

LNK3206D-TL from POWER INTEGRATIONS, in a SO-7. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 BP/M passive BYPASS / MULTI-FUNCTION pin. Connection point for the external decoupling capacitor of the internally regulated 5.0 V (VBP) supply. Cap value selects current-limit mode (0.1 µF = standard IL; 1 µF = reduced IL for low-cost SMD chokes). Shunt-clamped at ~5.2 V (VBP(SHUNT)); injecting a current >IBPSD for 2-3 oscillator cycles triggers auto-restart, enabling an external OVP function.
2 FB input FEEDBACK pin. During normal operation, MOSFET switching is inhibited on any cycle where current into FB exceeds IFB (~49 µA, referenced to ~2.0 V). Line/output overvoltage protection triggers auto-restart when current into FB exceeds IFBSD (~670 µA) for 2 consecutive switching cycles. Regulation is achieved by cycle skipping.
4 S power_in SOURCE pin. Internal power-MOSFET source connection and the IC's ground/common reference for the BYPASS and FEEDBACK pins. Tie to the local ground plane / heatsinking copper; all four SOURCE pins (4, 5, 6, 7) are internally common and should all be soldered.
5 S power_in SOURCE pin. Internally tied to the other SOURCE pins; provides IC ground and PCB heatsinking. Solder to a copper pour large enough to meet the thermal derating in the datasheet.
6 S power_in SOURCE pin. Internally tied to the other SOURCE pins; provides IC ground and PCB heatsinking. Solder to a copper pour large enough to meet the thermal derating in the datasheet.
7 S power_in SOURCE pin. Internally tied to the other SOURCE pins; provides IC ground and PCB heatsinking. Solder to a copper pour large enough to meet the thermal derating in the datasheet.
8 D power_in DRAIN pin. Drain of the internal 725 V power MOSFET and the supply node used both for start-up and steady-state internal bias (a high-voltage switched current source charges the BYPASS capacitor from DRAIN whenever the MOSFET is off). Extended creepage to all other pins (pin 3 is omitted) for surge withstand.

Key specifications

Parameter Value
Manufacturer POWER INTEGRATIONS
Package SO-7
Category PMIC
Pins 7

Ordering variants

  • LNK3206D-TLD
  • LNK3206D-TL
  • LNK3206D-TLP
  • LNK3206D-TLG
  • LNK3206D-TLG-TL

CAD (KiCad official)

  • Symbol: LNK3206D-TL
  • Footprint: Package_SO:SOIC-8-N7_3.9x4.9mm_P1.27mm
  • 3D model: SO-7 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: POWER INTEGRATIONS datasheet (None pp, sha256 14a10724851fd661, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF

Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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