component
LR78L09A
Public Made by Adomby adom
LRC Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+43@@ -0,0 +1,43 @@+# LR78L09A++**LRC** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89++LR78L09A from LRC, in a SOT-89. 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 +9 V output. Typical 9.0 V (min 8.64 V, max 9.36 V at Tj=25°C). Supplies up to 100 mA. A 0.1 µF bypass capacitor to GND close to the pin is recommended for stability and transient response. |+| 2 | GND | power_in | Ground / common return. On SOT-89 this pin is electrically tied to the large center tab used as the thermal pad. |+| 3 | Vin | power_in | Unregulated input voltage. Absolute max 30 V for the 9 V option; recommended range 11.5 V to 24 V. Dropout ~1.7 V typical. A 0.33 µF bypass capacitor to GND close to the pin is recommended. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | LRC |+| Package | SOT-89 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `LR78L09A`+- `LR78L09ALR78L09B`++## CAD (KiCad official)++- Symbol: `LR78L09A`+- Footprint: `Package_TO_SOT_SMD:SOT-89-3`+- 3D model: SOT-89 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [LRC datasheet](docs/lr78l09a-datasheet.pdf) (8 pp, sha256 `e540f0f8c27d9693`, 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/lr78l09a-datasheet.pdf)
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