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L78L12ACZ

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STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-92-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)l78l12aczfactory-2.0.0extractor-text
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Symbol & Footprint

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Datasheet

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Contents

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L78L12ACZ

STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-92-3

L78L12ACZ from STMicroelectronics, in a TO-92-3. 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 VOUT power_out Regulated 12 V output; 11.5 V min / 12 V typ / 12.5 V max at TJ = 25 °C, IO = 1-40 mA (±4 % AC grade); maximum output current 100 mA.
2 GND power_in Ground reference pin; common return for input and output.
3 VIN power_in Unregulated DC input; operating range 14.5 V to 27 V (IO = 1-40 mA); absolute maximum 35 V (VO = 12-15 V devices).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package TO-92-3
Category Power Management (PMIC)
Pins 3

CAD (KiCad official)

  • Symbol: L78L12ACZ
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92-3 (KiCad packages3D, STEP)
  • 3D model files: l78l12acz-etched.step / l78l12acz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l78l12acz.step / l78l12acz.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (45 pp, sha256 43922ae159face7e, retrieved 2026-09-27, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-sonnet-4-6 (text+vision), consensus claude-opus-4-7 (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