L78L12ACUTR

@@ -0,0 +1,47 @@+# L78L12ACUTR++**STMicroelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3++L78L12ACUTR 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 +12 V output pin. Delivers up to 100 mA into the load with typical output voltage 12 V (min 11.04 V / max 12.96 V for the AC grade at TJ=25 C). A 0.1 uF ceramic capacitor to GND is recommended for stability. |+| 2 | GND | power_in | Common/ground reference pin. On the SOT-89 the GND pin is thermally and electrically tied to the large tab/heat spreader on the back side of the package; connect to a copper ground pour for heat dissipation. |+| 3 | VIN | power_in | Unregulated positive input voltage. For the 12 V version, typical operating VI range is roughly 14.5 V to 30 V (absolute maximum 35 V for the 12 V option). Bypass with a 0.33 uF capacitor close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | SOT-89-3 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `L78L12ACUTRUTR`+- `L78L12ACUTRAZ`+- `L78L12ACUTRACZ`+- `L78L12ACUTRABD`+- `L78L12ACUTRACD`+- `L78L12ACUTRD`++## CAD (KiCad official)++- Symbol: `L78L12ACUTR`+- 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](https://www.st.com/resource/en/datasheet/l78l12acutr.pdf) (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](docs/l78l12acutr-datasheet.pdf)

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