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L78L05ACD13TR

Public Made by Adom

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STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs l78l05acd13tr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
l78l05acd13tr-etched.fit.json l78l05acd13tr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
l78l05acd13tr-etched.glb l78l05acd13tr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
l78l05acd13tr-etched.step l78l05acd13tr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
l78l05acd13tr-hero.glb Publish 0.2.1 · Ray
l78l05acd13tr-hero.overlay.json Publish 0.2.1 · Ray
l78l05acd13tr.glb Publish 0.1.0 · Ray
l78l05acd13tr.kicad_mod Publish 0.1.0 · Ray
l78l05acd13tr.kicad_sym Publish 0.1.0 · Ray
l78l05acd13tr.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
l78l05acd13tr.step Publish 0.1.0 · Ray
package.json Publish 0.2.1 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json Publish 0.2.1 · Ray
README.md l78l05acd13tr: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

L78L05ACD13TR

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

L78L05ACD13TR from STMicroelectronics, in a SOIC-8. Pinout and pin descriptions extracted from the datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VOUT power_out Regulated +5 V output. Delivers up to 100 mA. A 0.1 µF ceramic capacitor to GND is recommended for output stability and transient response.
2 GND power_in Ground return. Pins 2, 3, 6 and 7 are internally connected to the die-attach flag for enhanced thermal dissipation and must all be tied to the PCB ground plane.
3 GND power_in Ground return, internally commoned with pins 2, 6, 7 and the die-attach flag for thermal dissipation.
4 NC unconnected No internal connection. Leave floating or tie to GND at the user's discretion.
5 NC unconnected No internal connection. Leave floating or tie to GND at the user's discretion.
6 GND power_in Ground return, internally commoned with pins 2, 3, 7 and the die-attach flag for thermal dissipation.
7 GND power_in Ground return, internally commoned with pins 2, 3, 6 and the die-attach flag for thermal dissipation.
8 VIN power_in Unregulated DC input. Absolute maximum 30 V for the 5 V variant (VO = 3.3 to 9 V range, Table 1). A 0.33 µF ceramic capacitor to GND close to the pin is recommended when the regulator is located far from the input filter.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • L78L05ACD13TRD
  • L78L05ACD13TR
  • L78L05ACD13TRZ
  • L78L05ACD13TRAZ
  • L78L05ACD13TRU

CAD (KiCad official)

  • Symbol: L78L05ACD13TR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: l78l05acd13tr-etched.step / l78l05acd13tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l78l05acd13tr.step / l78l05acd13tr.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
l78l05acd13tr.step 122 KB You want the bare part, or you mark your own boards.
l78l05acd13tr-etched.step 2.4 MB You want the part with L78L05ACD13TR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 601 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: STMicroelectronics datasheet (47 pp, sha256 385835a89181b63c, 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