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mc79l12abdr2g

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by adom

onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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README

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MC79L12ABDR2G

onsemi · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOIC-8

MC79L12ABDR2G from onsemi, in a SOIC-8. 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 Vout power_out Regulated negative output, nominal -12 V (min -11.4 V, max -12.6 V) at up to 100 mA. A 0.1 uF output capacitor is recommended for stability and transient response.
2 Vin power_in Unregulated negative input supply. For -12 V output, Vin is typically -19 V; absolute max -35 Vdc. Tie together with pins 3, 6, and 7 (all Vin pins are internally common).
3 Vin power_in Unregulated negative input supply (common with pins 2, 6, 7). Tie all Vin pins together at the package for full current handling and thermal performance.
4 NC unconnected No internal connection. Leave floating or tie to ground per board layout preference.
5 GND power_in Common ground reference. A common ground is required between the input and output; regulator has no external sense lead.
6 Vin power_in Unregulated negative input supply (common with pins 2, 3, 7). Bypass with a 0.33 uF capacitor at the pin when the regulator is far from the supply filter.
7 Vin power_in Unregulated negative input supply (common with pins 2, 3, 6). Multiple Vin pins carry the input current and improve thermal dissipation.
8 NC unconnected No internal connection. Leave floating or tie to ground per board layout preference.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOIC-8
Category PMIC
Pins 8

Ordering variants

  • MC79L12ABDR2G
  • MC79L12ABDR2GABDG
  • MC79L12ABDR2GACDR2G
  • MC79L12ABDR2GACDG
  • MC79L12ABDR2GABPG
  • MC79L12ABDR2GABPRAG
  • MC79L12ABDR2GACPG
  • MC79L12ABDR2GACPRAG
  • MC79L12ABDR2GACPRPG

CAD (KiCad official)

  • Symbol: MC79L12ABDR2G
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: mc79l12abdr2g-etched.step / mc79l12abdr2g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mc79l12abdr2g.step / mc79l12abdr2g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (None pp, sha256 115a59773830cb30, 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

Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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