L78L15ABUTR

@@ -0,0 +1,50 @@+# L78L15ABUTR++**STMicroelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3++L78L15ABUTR 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 positive output. Delivers up to 100 mA with typical dropout of ~1.7 V (VIN must be ≥ ~17 V for full regulation). A 0.1 µF ceramic bypass capacitor to GND close to this pin is recommended to improve transient response and stability. |+| 2 | GND | power_in | Device ground / common return for input and output. In the SOT-89 package the GND pin is electrically bonded to the die-attach flag on the bottom of the package, which serves as the primary thermal path to the PCB copper. |+| 3 | VIN | power_in | Unregulated positive DC input. Absolute maximum 35 V for the 15 V variant; recommended VIN ≥ VOUT + dropout (~17 V) for full regulation. Bypass with a 0.33 µF ceramic capacitor to GND close to this pin to prevent oscillation and improve line transient response. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | SOT-89-3 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `L78L15ABUTRUTR`+- `L78L15ABUTRZ`+- `L78L15ABUTRAZ`+- `L78L15ABUTRABZ`+- `L78L15ABUTRCZ`+- `L78L15ABUTRACZ`+- `L78L15ABUTRD`+- `L78L15ABUTRD-TR`+- `L78L15ABUTRABD`++## CAD (KiCad official)++- Symbol: `L78L15ABUTR`+- 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/l78l15abutr.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/l78l15abutr-datasheet.pdf)

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