component
78L09-150
Public Made by Adomby adom
UMW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+38@@ -0,0 +1,38 @@+# 78L09-150++**UMW** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3++78L09-150 from UMW, 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 +9 V output (typ 9.0 V, min 8.91 V, max 9.09 V at Tj=25°C). Delivers up to 150 mA. Requires a Co=0.1 µF output capacitor to ground for stability. |+| 2 | GND | power_in | Common ground / return reference for the regulator. Carries quiescent current (typ 2 mA, max 5.5 mA) plus load return. |+| 3 | INPUT | power_in | Unregulated DC input supply. Recommended Vi=15 V nominal for the 78L09; absolute maximum 35 V. Dropout voltage typ 1.7 V (Vi must exceed Vo by at least this margin). Bypass with C1=0.33 µF to ground close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | UMW |+| Package | SOT-89-3 |+| Category | PMIC |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `78L09-150`+- 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:** [UMW datasheet](docs/78l09-150-datasheet.pdf) (17 pp, sha256 `fe2f4e8f0d975d52`, 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/78l09-150-datasheet.pdf)
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