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L78M15ABDT-TR

Public Made by Adom

by adom

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, 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 l78m15abdt-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
l78m15abdt-tr-etched.fit.json l78m15abdt-tr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
l78m15abdt-tr-etched.glb l78m15abdt-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
l78m15abdt-tr-etched.step l78m15abdt-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
l78m15abdt-tr-hero.glb Publish 0.2.1 · Ray
l78m15abdt-tr-hero.overlay.json Publish 0.2.1 · Ray
l78m15abdt-tr.glb Publish 0.1.0 · Ray
l78m15abdt-tr.kicad_mod Publish 0.1.0 · Ray
l78m15abdt-tr.kicad_sym Publish 0.1.0 · Ray
l78m15abdt-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
l78m15abdt-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 l78m15abdt-tr: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

L78M15ABDT-TR

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

L78M15ABDT-TR from STMicroelectronics, in a 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 (V_I). Absolute maximum 35 V for 5-18 V output variants. Should be bypassed to GND with a 0.33 µF ceramic if the device is more than a few centimetres from the reservoir cap.
2 GND power_in Common ground reference for input and output. Electrically tied to the exposed thermal tab on DPAK, which also serves as the primary heat-transfer path to the PCB copper pour.
3 OUTPUT power_out Regulated +15 V output (typ), guaranteed 14.55-15.45 V (2 %, AB grade). Delivers up to 500 mA with adequate heat-sinking; internally current-limited (~230 mA short-circuit, typ). Bypass to GND with 0.1 µF ceramic.
TAB GND power_in Exposed metal tab on the DPAK backside - same net as pin 2 (GND). Soldered to a copper pour that dissipates junction heat (R_thJC ≈ 8 °C/W, R_thJA ≈ 100 °C/W on standard footprint).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package DPAK
Category PMIC
Pins 4

Ordering variants

Same part, different packaging or reel option.

  • L78M15ABDT-TR
  • L78M15ABDT-TRCV
  • L78M15ABDT-TRACV
  • L78M15ABDT-TRABV
  • L78M15ABDT-TRCP
  • L78M15ABDT-TRACP
  • L78M15ABDT-TRABP
  • L78M15ABDT-TR-1

CAD (KiCad official)

  • Symbol: L78M15ABDT-TR
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: DPAK (KiCad packages3D, STEP)
  • 3D model files: l78m15abdt-tr-etched.step / l78m15abdt-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l78m15abdt-tr.step / l78m15abdt-tr.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
l78m15abdt-tr.step 119 KB You want the bare part, or you mark your own boards.
l78m15abdt-tr-etched.step 1.7 MB You want the part with L78M15ABDT-TR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 469 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 (45 pp, sha256 aab13a77a9bc7601, 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