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L7809CV-DG

Public Made by Adom

by adom

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs l7809cv-dg: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (pad-position, synthesised, bottom-right) · Ray
l7809cv-dg-etched.fit.json l7809cv-dg: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
l7809cv-dg-etched.glb l7809cv-dg: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
l7809cv-dg-etched.step l7809cv-dg: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
l7809cv-dg-hero.glb Publish 0.2.1 · Ray
l7809cv-dg-hero.overlay.json Publish 0.2.1 · Ray
l7809cv-dg.glb Publish 0.1.0 · Ray
l7809cv-dg.kicad_mod Publish 0.1.0 · Ray
l7809cv-dg.kicad_sym Publish 0.1.0 · Ray
l7809cv-dg.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
l7809cv-dg.step Publish 0.1.0 · Ray
package.json Publish 0.2.1 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (pad-position, synthesised, bottom-right) · Ray
page.json Publish 0.2.1 · Ray
README.md l7809cv-dg: specified limits as data (metadata.characteristics, 14 rows from the datasheet) · Ray

L7809CV-DG

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

L7809CV-DG from STMicroelectronics, 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 INPUT power_in Unregulated positive supply input (V_I). Recommended input range for a 9 V output part is roughly 11.5 V to 35 V (V_O + dropout, up to absolute-max 35 V). A 0.33 uF ceramic bypass capacitor to GND is recommended when the regulator is located far from the power supply filter.
2 GROUND power_in Common ground reference for both input and output. Also electrically connected to the mounting tab of the TO-220 package.
3 OUTPUT power_out Regulated +9 V output (V_O). Capable of delivering up to 1.5 A with adequate heatsinking. A 0.1 uF ceramic output capacitor is recommended for transient response.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • L7809CV-DG
  • L7809CP
  • L7809CD2T-TR

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output voltage VO 8.64 9 9.36 V TJ = 25°C 20
Output voltage VO 8.55 9 9.45 V IO = 5 mA to 1 A, VI = 11.5 to 22 V 20
Line regulation ΔVO 180 mV VI = 11.5 to 26 V, TJ = 25°C 20
Line regulation ΔVO 90 mV VI = 12 to 18 V, TJ = 25°C 20
Load regulation ΔVO 180 mV IO = 5 mA to 1.5 A, TJ = 25°C 20
Load regulation ΔVO 90 mV IO = 250 to 750 mA, TJ = 25°C 20
Quiescent current Id 8 mA TJ = 25°C 20
Quiescent current change ΔId 0.5 mA IO = 5 mA to 1 A 20
Quiescent current change ΔId 1 mA VI = 11.5 to 26 V 20
DC input voltage (for VO = 5 to 18 V) VI 35 V for VO = 5 to 18 V 7
Operating junction temperature range (L78xxC, L78xxAC) TOP 0 125 °C for L78xxC, L78xxAC 7
Storage temperature range TSTG -65 150 °C 7
Thermal resistance junction-case (TO-220) RthJC 5 °C/W 7
Thermal resistance junction-ambient (TO-220) RthJA 50 °C/W 7

CAD (KiCad official)

  • Symbol: L7809CV-DG
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)
  • 3D model files: l7809cv-dg-etched.step / l7809cv-dg-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l7809cv-dg.step / l7809cv-dg.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
l7809cv-dg.step 83 KB You want the bare part, or you mark your own boards.
l7809cv-dg-etched.step 880 KB You want the part with L7809CV-DG already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 229 faces against 48 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (58 pp, sha256 83f591a9457f6fe3, retrieved 2026-08-17, tier: manufacturer)
  • 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