component
LNK626DG-TL
Public Unreviewedby Ray
POWER INTEGRATIONS AC-DC Controllers and Regulators, SOIC-7. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLNK626DG-TL
POWER INTEGRATIONS · AC-DC Controllers and Regulators · SOIC-7
LNK626DG-TL from POWER INTEGRATIONS, in a SOIC-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 | FB | input | FEEDBACK pin. During normal operation this pin controls MOSFET switching by sensing the AC voltage on the transformer bias winding and regulates the output voltage based on its flyback voltage. Internal threshold V_FBth is regulated by the ON/OFF state machine (~2.5 µs sample delay). |
| 2 | BP | power_out | BYPASS pin. Connection for an external bypass capacitor (1 µF recommended, rated ≥6.8 V) for the internally generated 6.0 V supply. The internal regulator charges this cap from the DRAIN pin when the MOSFET is off; the IC runs off this stored energy when the MOSFET is on. |
| 4 | D | power_in | DRAIN pin. High-voltage power MOSFET drain (725 V BV_DSS). Provides internal operating current for both start-up and steady-state (via the internal regulator that charges the BYPASS capacitor). Pin 3 is omitted on the SO-8C package to increase HV creepage to the SOURCE pins. |
| 5 | S | power_in | SOURCE pin. Internally connected to the output MOSFET source; serves as the high-voltage power return and control-circuit common. Multiple S pins (5-8) are paralleled and also form the primary heat-sinking copper area. |
| 6 | S | power_in | SOURCE pin. Internally connected to the output MOSFET source; high-voltage power and control common return. Solder to a sufficient copper area to keep the SOURCE pin temperature ≤100 °C (D package) for adequate heat sinking. |
| 7 | S | power_in | SOURCE pin. Internally connected to the output MOSFET source; high-voltage power and control common return. Tie all S pins together on the PCB. |
| 8 | S | power_in | SOURCE pin. Internally connected to the output MOSFET source; high-voltage power and control common return. Use single-point (Kelvin) grounding at the negative terminal of the input filter capacitor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | POWER INTEGRATIONS |
| Package | SOIC-7 |
| Category | PMIC |
| Pins | 7 |
Ordering variants
Same part, different packaging or reel option.
LNK626DG-TLLNK626DG-TLPG
CAD (KiCad official)
- Symbol:
LNK626DG-TL - Footprint:
Package_SO:SOIC-8-N7_3.9x4.9mm_P1.27mm - 3D model: SOIC-7 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: POWER INTEGRATIONS datasheet (18 pp, sha256
0a75db0635a762f4, 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).