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LNK3204D-TL

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by Ray

POWER INTEGRATIONS DC-DC Converters, SO-7. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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LNK3204D-TL

POWER INTEGRATIONS · DC-DC Converters · SO-7

LNK3204D-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 power_in BYPASS / Multi-function pin. Connection for the external bypass capacitor for the internally generated 5.0 V supply; the capacitor value (0.1 uF standard, 1 uF for reduced) also selects current-limit mode. Provides a shutdown/auto-restart entry when the current into this pin exceeds I_BPSD for 2-3 oscillator cycles (used for external OVP). Internal 5.2 V shunt clamp allows external bias via a series resistor.
2 FB input FEEDBACK input. Low-impedance source-follower set at V_FB = 2.0 V. MOSFET switching is terminated for a cycle when I_FB > 49 uA is delivered into this pin (ON/OFF control). If I_FB exceeds I_FBSD = 670 uA for 2 consecutive switching cycles, line-overvoltage auto-restart is triggered.
4 D power_in DRAIN. High-voltage (725 V rated) power MOSFET drain connection. Provides the internal operating current for start-up and steady-state operation via an internal high-voltage current source that charges the BYPASS capacitor.
5 S power_in SOURCE. Power MOSFET source connection and ground reference for the BYPASS and FEEDBACK pins. Multiple SOURCE pins (5-8) are internally tied and should be soldered to a copper pour for heat sinking to keep the pin temperature at or below 100 C.
6 S power_in SOURCE. Internally tied to other S pins; MOSFET source / ground reference.
7 S power_in SOURCE. Internally tied to other S pins; MOSFET source / ground reference.
8 S power_in SOURCE. Internally tied to other S pins; MOSFET source / ground reference.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • LNK3204D-TLD
  • LNK3204D-TL
  • LNK3204D-TLP
  • LNK3204D-TLG

CAD (KiCad official)

  • Symbol: LNK3204D-TL
  • Footprint: Package_SO:TI_SO-PowerPAD-8
  • 3D model: SO-7 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: POWER INTEGRATIONS datasheet (22 pp, sha256 6a1db7eb50c9a3f4, 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