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Contents

Pinout
Key specifications
Electrical characteristics
CAD (KiCad official)
Provenance

README

markdown

L7812ACV

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

L7812ACV from STMicroelectronics, in a TO-220. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	INPUT	power_in	Unregulated DC input voltage, rated up to 35 V absolute maximum for the 12 V output version, with VI = 14.8 to 25 V for the specified 12 V output range.
2	GROUND	power_in	Common ground reference for input and output, also connected to the metal tab of the TO-220 package.
3	OUTPUT	power_out	Regulated 12 V output (11.75 to 12.25 V at 25 °C) delivering up to 1.5 A with internal current limiting and thermal shutdown.

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	TO-220
Category	Power Management (PMIC)
Pins	3

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	IO = 5 mA to 1 A, VI = 14.8 to 25 V	10
Output voltage	VO	11.75	12	12.25	V	TJ = 25 °C	10
Line regulation	ΔVO		13	120	mV	VI = 14.8 to 30 V, IO = 500 mA, TJ = 25 °C	10
Line regulation	ΔVO		16	120	mV	VI = 16 to 12 V	10
Line regulation	ΔVO		6	60	mV	VI = 16 to 12 V, TJ = 25 °C	10
Load regulation	ΔVO		25	100	mV	IO = 5 mA to 1 A	10
Load regulation	ΔVO		30	100	mV	IO = 5 mA to 1.5 A, TJ = 25 °C	10
Load regulation	ΔVO		10	50	mV	IO = 250 to 750 mA	10
Quiescent current	Iq		4.4	6	mA	TJ = 25 °C	10
Quiescent current	Iq			6	mA		10
Quiescent current change	DIq			0.8	mA	VI = 15 to 30 V, IO = 500 mA	10
Quiescent current change	DIq			0.5	mA	IO = 5 mA to 1 A	10
Output voltage drift	ΔVO/ΔT		-1		mV/°C		10
Supply voltage rejection	SVR		60		dB	VI = 15 to 25 V, f = 120 Hz, IO = 500 mA	10
Dropout voltage	Vd		2		V	IO = 1 A, TJ = 25 °C	10
Output noise voltage	eN		10		µV/VO	TA = 25 °C, B = 10 Hz to 100 kHz	10
Output resistance	RO		18		mΩ	f = 1 kHz	10
Short circuit current	Isc		0.2		A	VI = 35 V, TA = 25 °C	10
Short circuit peak current	Iscp		2.2		A	TJ = 25 °C	10
DC input voltage	VI			35	V	for VO = 5 to 18 V (applies to 12 V output)	4
Storage temperature range	TSTG	-65		150	°C		4
Operating junction temperature range	TOP	0		125	°C	for L78xxAC	4
Thermal resistance junction-case	RthJC		5		°C/W	TO-220 package	4
Thermal resistance junction-ambient	RthJA		50		°C/W	TO-220 package	4

CAD (KiCad official)

Symbol: L7812ACV
Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
3D model: TO-220 (KiCad packages3D, STEP)
3D model files: l7812acv-etched.step / l7812acv-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l7812acv.step / l7812acv.glb are the bare package body.

Provenance

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

Datasheet: STMicroelectronics datasheet (55 pp, sha256 ca2cee3c82e6b40e, retrieved 2026-10-10, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF