component
78M09
Public Made by Adomby adom
UMW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+38@@ -0,0 +1,38 @@+# 78M09++**UMW** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252++78M09 from UMW, in a TO-252. 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 | INPUT | power_in | Unregulated positive DC input to the regulator. For Vo=9V, recommended Vi range is 11.5 V to 24 V; absolute maximum Vi = 35 V. A 0.33 uF input capacitor (Ci) is recommended close to the pin for stability. |+| 2 | GND | power_in | Common ground reference for both input and output. On TO-252 the GND pin is electrically connected to the tab/heat-slug used for PCB heatsinking. |+| 3 | OUTPUT | power_out | Regulated +9 V output (typ 9.0 V, min 8.64 V / max 9.36 V at 25 C). Delivers up to 1 A with internal current-limit around 800 mA short-circuit and 1.3 A peak. A 0.1 uF output capacitor (Co) is recommended for transient response. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | UMW |+| Package | TO-252 |+| Category | PMIC |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `78M09`+- Footprint: `Package_TO_SOT_SMD:TO-252-2`+- 3D model: TO-252 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [UMW datasheet](docs/78m09-datasheet.pdf) (16 pp, sha256 `162df1416fa16ead`, 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/78m09-datasheet.pdf)
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