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L78M05ACDT-TR

Public Made by Adom

by adom

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs l78m05acdt-tr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain… · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
l78m05acdt-tr-etched.fit.json l78m05acdt-tr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
l78m05acdt-tr-etched.glb l78m05acdt-tr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain… · Ray
l78m05acdt-tr-etched.step l78m05acdt-tr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain… · Ray
l78m05acdt-tr-hero.glb Publish 0.2.1 · Ray
l78m05acdt-tr-hero.overlay.json Publish 0.2.1 · Ray
l78m05acdt-tr.glb Publish 0.1.0 · Ray
l78m05acdt-tr.kicad_mod Publish 0.1.0 · Ray
l78m05acdt-tr.kicad_sym Publish 0.1.0 · Ray
l78m05acdt-tr.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
l78m05acdt-tr.step Publish 0.1.0 · Ray
package.json Publish 0.2.1 · Ray
pads.json page.json: fold the "TAB" entry into pin 2. On TO-252-2 the tab is not a separate pad - it is that lead - so nothing wa… · Ray
page.json Publish 0.2.1 · Ray
README.md l78m05acdt-tr: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

L78M05ACDT-TR

STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)

L78M05ACDT-TR from STMicroelectronics, in a TO-252-2(DPAK). 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 INPUT power_in Unregulated DC input voltage. For a 5 V output, VI must be at least ~7 V (dropout ≈ 2 V typ). Absolute max VI = 35 V. A 0.33 µF ceramic bypass capacitor to GND is recommended close to this pin.
2 GND power_in Ground / common reference for input and output. On the DPAK package the GND pin is electrically and thermally common with the exposed metal tab, which serves as the primary heat-sinking surface (RthJC = 8 °C/W, RthJA = 100 °C/W).
3 OUTPUT power_out Regulated +5 V output, 4.8 V to 5.2 V over line/load/temperature. Delivers up to 500 mA (guaranteed 350 mA test condition) with internal short-circuit current limit (~300 mA typ, 700 mA peak). A 0.1 µF ceramic capacitor to GND improves transient response.
TAB GND power_in Exposed DPAK metal tab, internally connected to pin 2 (GND). Provides the primary thermal path to the PCB copper pour for heat dissipation.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package TO-252-2(DPAK)
Category PMIC
Pins 4

Ordering variants

Same part, different packaging or reel option.

  • L78M05ACDT-TR
  • L78M05ACDT-TRT
  • L78M05ACDT-TRCV

CAD (KiCad official)

  • Symbol: L78M05ACDT-TR
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)
  • 3D model files: l78m05acdt-tr-etched.step / l78m05acdt-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l78m05acdt-tr.step / l78m05acdt-tr.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
l78m05acdt-tr.step 119 KB You want the bare part, or you mark your own boards.
l78m05acdt-tr-etched.step 1.7 MB You want the part with L78M05ACDT-TR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 468 faces against 83 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 (29 pp, sha256 06d79d9f1c19140c, 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