component

L78L10ACUTR

Public Made by Adom

by adom

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs l78l10acutr: 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
l78l10acutr-etched.fit.json l78l10acutr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
l78l10acutr-etched.glb l78l10acutr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
l78l10acutr-etched.step l78l10acutr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
l78l10acutr.glb Publish 0.1.0 · Ray
l78l10acutr.kicad_mod Publish 0.1.0 · Ray
l78l10acutr.kicad_sym Publish 0.1.0 · Ray
l78l10acutr.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
l78l10acutr.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · 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 l78l10acutr: specified limits as data (metadata.characteristics, 17 rows from the datasheet) · Ray
README.md l78l10acutr: specified limits as data (metadata.characteristics, 17 rows from the datasheet) · Ray

L78L10ACUTR

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

L78L10ACUTR 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 +10 V output. Nominal 10 V (min 9.2 V, max 10.8 V at TJ=25 °C); delivers up to 100 mA. A 0.1 µF ceramic capacitor to GND is recommended for stability and transient response.
2 GND power_in Common ground reference for input and output. On the SOT-89 package the GND pin is also electrically connected to the die-attach tab on the top of the package for heat dissipation.
3 VIN power_in Unregulated DC input. For the 10 V option VI must exceed VOUT by at least the dropout (~1.7 V typ) and stay within the 30 V absolute-max input rating (VO 3.3-9 V range spec). A 0.33 µF ceramic input capacitor to GND is recommended, particularly when the regulator is located far from the power-supply filter.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • L78L10ACUTR
  • L78L10ACUTRZ
  • L78L10ACUTRD

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output voltage VO 9.6 10 10.4 V TJ = 25 °C 12
Output voltage VO 9.5 10.5 V IO = 1 to 40 mA, VI = 12.5 to 23 V 12
Line regulation ∆VO 230 mV VI = 12.5 to 23 V, TJ = 25 °C 12
Line regulation ∆VO 170 mV VI = 13 to 23 V, TJ = 25 °C 12
Load regulation ∆VO 80 mV IO = 1 to 100 mA, TJ = 25 °C 12
Load regulation ∆VO 40 mV IO = 1 to 40 mA, TJ = 25 °C 12
Quiescent current Id 6 mA TJ = 25 °C 12
Quiescent current Id 5.5 mA TJ = 125 °C 12
Quiescent current change ∆Id 0.1 mA IO = 1 to 40 mA 12
Quiescent current change ∆Id 1.5 mA VI = 13 to 23 V 12
Output noise voltage eN 60 µV B = 10 Hz to 100 kHz, TJ = 25 °C 12
Supply voltage rejection SVR 37 45 dB VI = 14 to 23 V, f = 120 Hz, IO = 40 mA, TJ = 25 °C 12
Dropout voltage Vd 1.7 V 12
Output current IO 100 mA 4
Storage temperature range TSTG -65 150 °C 4
Operating junction temperature range TOP 0 125 °C for L78LxxAC / L78LxxC 4
Thermal resistance junction-ambient RthJA 55 °C/W SOT-89; considering 6 cm² copper board heat-sink 4

CAD (KiCad official)

  • Symbol: L78L10ACUTR
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)
  • 3D model files: l78l10acutr-etched.step / l78l10acutr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l78l10acutr.step / l78l10acutr.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
l78l10acutr.step 57 KB You want the bare part, or you mark your own boards.
l78l10acutr-etched.step 1.4 MB You want the part with L78L10ACUTR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 375 faces against 42 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 (40 pp, sha256 8b73c521b7f1b36e, 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