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L78L10ACUTR
Public Made by Adomby 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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l78l10acutr: specified limits as data (metadata.characteristics, 17 rows from the datasheet)
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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.
L78L10ACUTRL78L10ACUTRZL78L10ACUTRD
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);l78l10acutr.step/l78l10acutr.glbare 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).
# 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`](l78l10acutr.step) | 57 KB | You want the bare part, or you mark your own boards. |
| [`l78l10acutr-etched.step`](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](docs/l78l10acutr-datasheet.pdf) (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](docs/l78l10acutr-datasheet.pdf)