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L78L15ACUTR

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by Ray

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

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L78L15ACUTR

STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

L78L15ACUTR from STMicroelectronics, in a SOT-89-3. 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 +15 V output. Delivers up to 100 mA with internal short-circuit and thermal-overload protection. Recommended 0.1 µF ceramic decoupling capacitor to GND close to the pin.
2 GND power_in Ground / common reference for both input and output. On SOT-89 the center pin (pin 2) is also fused to the die-attach tab for improved thermal dissipation.
3 VIN power_in Unregulated positive input. Absolute maximum 35 V for the 15 V option; must exceed VOUT by the dropout voltage (typ. ~1.7 V). Recommended 0.33 µF input capacitor to GND close to the pin.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOT-89-3
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • L78L15ACUTR
  • L78L15ACUTRZ
  • L78L15ACUTRAZ
  • L78L15ACUTRABZ
  • L78L15ACUTRD
  • L78L15ACUTRD-TR

CAD (KiCad official)

  • Symbol: L78L15ACUTR
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: STMicroelectronics datasheet (45 pp, sha256 43922ae159face7e, 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