MC79L05ACDR2G 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 voltage, nominally -5.0 V (-4.75 V to -5.25 V over line/load). Output current up to 100 mA (40 mA in SOIC-8 depending on thermal). A 0.1 uF output bypass capacitor is recommended for stability and transient response.
2	Vin	power_in	Unregulated negative input supply. Nominal operating range -7.0 V to -20 V for the -5 V version (absolute max -30 V). Pins 2, 3, 6, and 7 are all tied together internally as the input node; a 0.33 uF bypass capacitor to ground is recommended close to the pins.
3	Vin	power_in	Negative input supply (same net as pins 2, 6, 7). Multiple pins share the input node to reduce lead inductance and improve current handling on the SOIC-8 package.
4	NC	unconnected	No internal connection. Leave floating or tie to a convenient net for PCB routing; not required for operation.
5	GND	power_in	Common ground reference. Must be shared between input and output. Keep ground return short to avoid loop drops since the regulator has no external sense lead.
6	Vin	power_in	Negative input supply (same net as pins 2, 3, 7). Multiple Vin pins spread current and thermal load across the SOIC-8 leadframe.
7	Vin	power_in	Negative input supply (same net as pins 2, 3, 6). Ties into the internal input node of the regulator.
8	NC	unconnected	No internal connection. Not required for operation; may be left floating.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

MC79L05ACDR2G
MC79L05ACDR2GDG
MC79L05ACDR2GZG
MC79L05ACDR2GRLRAG
MC79L05ACDR2GRLRPG

CAD (KiCad official)

Symbol: MC79L05ACDR2G
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`mc79l05acdr2g.step`	122 KB	You want the bare part, or you mark your own boards.
`mc79l05acdr2g-etched.step`	2.6 MB	You want the part with `MC79L05ACDR2G` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 626 faces against 147 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: onsemi datasheet (15 pp, sha256 3b8ec4831b4ba3d5, 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