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LM7809T

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by Ray

HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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LM7809T

HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220

LM7809T from HGSEMI, in a TO-220. 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 VCC power_in Unregulated positive input supply. Recommended input voltage 11.5V to 35V for the LM7809; a 0.33µF input bypass capacitor to GND is recommended near the pin.
2 GND power_in Common ground reference for both the input and regulated output. In TO-220-3 / TO-263 packages the ground pin is electrically connected to the tab / heat-slug.
3 OUT power_out Regulated +9V output (8.65V min, 9.0V typ, 9.35V max at VI=15V, Io=0.5A). Supplies up to 1.2A; a 0.1µF output capacitor to GND is recommended for stability.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package TO-220
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • LM7809TT
  • LM7809TS/TR
  • LM7809TS2/TR

CAD (KiCad official)

  • Symbol: LM7809T
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: HGSEMI datasheet (11 pp, sha256 7c51292380972d4a, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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