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LM2940G-50-AA3-R
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UTC Unisonic Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-4. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+49@@ -0,0 +1,49 @@+# LM2940G-50-AA3-R++**UTC Unisonic Tech** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-4++LM2940G-50-AA3-R from UTC Unisonic Tech, in a SOT-223-4. 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 | VIN | power_in | Unregulated positive input supply. Operating range for 5V variant is 6.25V to 26V (absolute max 26V). Bypass with recommended input capacitor per datasheet. |+| 2 | GND | power_in | Ground reference / return. On SOT-223 the GND pin also serves as the primary thermal path via the tab (θJA = 174 °C/W). |+| 3 | VOUT | power_out | Regulated 5.0V output (4.85V min, 5.15V max). Supplies up to 1A load current. Requires a minimum 22µF output capacitor for stability per datasheet. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | UTC Unisonic Tech |+| Package | SOT-223-4 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `LM2940G-50-AA3-RAA3-R`+- `LM2940G-50-AA3-RTA3-T`+- `LM2940G-50-AA3-RTF3-T`+- `LM2940G-50-AA3-RTN3-R`+- `LM2940G-50-AA3-RTQ2-R`+- `LM2940G-50-AA3-RTQ2-T`+- `LM2940G-50-AA3-RTQ3-R`+- `LM2940G-50-AA3-RTQ3-T`++## CAD (KiCad official)++- Symbol: `LM2940G-50-AA3-R`+- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`+- 3D model: SOT-223-4 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [UTC Unisonic Tech datasheet](docs/lm2940g-50-aa3-r-datasheet.pdf) (12 pp, sha256 `2caeccb20b3d374c`, 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/lm2940g-50-aa3-r-datasheet.pdf)
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