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L78M15CDT-TR

Public Unreviewed

by Ray

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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L78M15CDT-TR

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

L78M15CDT-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 pin. Absolute maximum 35 V (for VO = 5-18 V variants, applies to 15 V option). Requires a 0.33 uF bypass capacitor to ground close to the pin per Figure 4/Figure 5 application circuit.
2 GROUND power_in Common ground reference pin. Electrically connected to the DPAK metal tab/backside, which is the primary thermal path for heat-sinking.
3 OUTPUT power_out Regulated +15 V output pin, up to 0.5 A output current with internal current limit and SOA/thermal protection. Recommended output capacitor is 0.1 uF to ground for stability and transient response.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package TO-252-2(DPAK)
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • L78M15CDT-TRT
  • L78M15CDT-TRP
  • L78M15CDT-TR
  • L78M15CDT-TRDP

CAD (KiCad official)

  • Symbol: L78M15CDT-TR
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
l78m15cdt-tr.step 119 KB You want the bare part, or you mark your own boards.
l78m15cdt-tr-etched.step 1.6 MB You want the part with L78M15CDT-TR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 437 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 (46 pp, sha256 bf25de1549fb4045, 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