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L7812CV-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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Contents

README

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L7812CV-DG

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

L7812CV-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 DC input (V_I). Accepts up to 35 V absolute maximum for the 12 V output variant. A 0.33 uF ceramic capacitor to GND close to the pin is recommended for stability.
2 GROUND power_in Common ground / reference return. Electrically connected to the TO-220 metal tab; carries the quiescent current that flows out of the ground pin (I_Q is not part of the load current path).
3 OUTPUT power_out Regulated +12 V output, up to 1.5 A with adequate heat-sinking. A 0.1 uF ceramic capacitor to GND is recommended to improve transient response.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • L7812CV-DG
  • L7812CP
  • L7812CD2T-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 11.5 12 12.5 V TJ = 25°C 21
Output voltage VO 11.4 12 12.6 V IO = 5 mA to 1 A, VI = 14.5 to 25 V 21
Line regulation ΔVO 240 mV VI = 14.5 to 30 V, TJ = 25°C 21
Line regulation ΔVO 120 mV VI = 16 to 22 V, TJ = 25°C 21
Load regulation ΔVO 240 mV IO = 5 mA to 1.5 A, TJ = 25°C 21
Load regulation ΔVO 120 mV IO = 250 to 750 mA, TJ = 25°C 21
Quiescent current Id 8 mA TJ = 25°C 21
Quiescent current change ΔId 0.5 mA IO = 5 mA to 1 A 21
Quiescent current change ΔId 1 mA VI = 14.5 to 30 V 21
Output voltage drift ΔVO/ΔT -1 mV/°C IO = 5 mA 21
Output noise voltage eN 75 µV/VO B = 10 Hz to 100 kHz, TJ = 25°C 21
Supply voltage rejection SVR 55 dB VI = 15 to 25 V, f = 120 Hz 21
Dropout voltage Vd 2 V IO = 1 A, TJ = 25°C 21
Output resistance RO 18 mΩ f = 1 kHz 21
Short circuit current Isc 0.35 A VI = 35 V, TJ = 25°C 21
Short circuit peak current Iscp 2.2 A TJ = 25°C 21
Input voltage DC (absolute maximum) VI 35 V for VO = 5 to 18 V 7
Storage temperature range TSTG -65 150 °C 7
Operating junction temperature range TOP 0 125 °C for L78xxC 7
Thermal resistance junction-case (TO-220) RthJC 5 °C/W TO-220 column 7
Thermal resistance junction-ambient (TO-220) RthJA 50 °C/W TO-220 column 7

CAD (KiCad official)

  • Symbol: L7812CV-DG
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)
  • 3D model files: l7812cv-dg-etched.step / l7812cv-dg-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l7812cv-dg.step / l7812cv-dg.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
l7812cv-dg.step 83 KB You want the bare part, or you mark your own boards.
l7812cv-dg-etched.step 787 KB You want the part with L7812CV-DG already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 210 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 6c86513636f2d6c9, 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