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MC78L09ACDR2G

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by Ray

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

componentpower management (pmic)mc78l09acdr2g
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3D Model

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Datasheet

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Contents

README

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MC78L09ACDR2G

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

MC78L09ACDR2G 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 positive output, +9.0 V nominal (8.6-9.4 V at TJ = +25 °C), 100 mA max. Bypassing with a 0.1 µF capacitor to ground is recommended for improved transient response.
2 GND power_in Ground / common return. Electrically common to the die-attach flag along with pins 3, 6, and 7 to reduce package thermal resistance; connect all four to the ground plane for best power dissipation.
3 GND power_in Ground / common return. Electrically common to the die-attach flag along with pins 2, 6, and 7; tie to the ground plane for reduced thermal resistance.
4 NC unconnected No internal connection. Leave floating or tie to ground; not used by the regulator.
5 NC unconnected No internal connection. Leave floating or tie to ground; not used by the regulator.
6 GND power_in Ground / common return. Electrically common to the die-attach flag along with pins 2, 3, and 7; tie to the ground plane for reduced thermal resistance.
7 GND power_in Ground / common return. Electrically common to the die-attach flag along with pins 2, 3, and 6; tie to the ground plane for reduced thermal resistance.
8 VIN power_in Unregulated positive supply input. Recommended operating range 11.5-24 Vdc for the 9 V version (dropout ~1.7 V); absolute maximum 35 Vdc. A 0.33 µF bypass capacitor to ground close to the pin is recommended when the regulator is distant from the power supply filter.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOIC-8
Category Power Management (PMIC)
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • MC78L09ACDR2G
  • MC78L09ACDR2GDG
  • MC78L09ACDR2GPG
  • MC78L09ACDR2GPRAG
  • MC78L09ACDR2GPRPG

CAD (KiCad official)

  • Symbol: MC78L09ACDR2G
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: onsemi datasheet (None pp, sha256 38814627bd4ee874, retrieved 2026-08-17, tier: lcsc)
  • 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