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AMS1117-5.0S
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UMW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+39@@ -0,0 +1,39 @@+# AMS1117-5.0S++**UMW** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89++AMS1117-5.0S from UMW, 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 | GND | power_in | Ground reference pin (labelled GND/ADJ on datasheet; for fixed-voltage versions this pin is the ground return); I/O designated I/O on page 1. |+| 2 | VOUT | power_out | Regulated 5.0 V fixed output (4.900 V min, 5.100 V max, ±2%); rated for up to 1 A with 1.2 V typical dropout voltage at 1 A; requires 22 µF tantalum output capacitor for stability. |+| 3 | VIN | power_in | Unregulated input supply voltage; recommended operating maximum 12 V, absolute maximum 18 V; minimum input must exceed VOUT by at least the dropout voltage (typ. 1.2 V at 1 A). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | UMW |+| Package | SOT-89 |+| Category | Power Management (PMIC) |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `AMS1117-5.0S`+- Footprint: `Package_TO_SOT_SMD:SOT-89-3`+- 3D model: SOT-89 (KiCad packages3D, STEP)+- 3D model files: `ams1117-5-0s-etched.step` / `ams1117-5-0s-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ams1117-5-0s.step` / `ams1117-5-0s.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [UMW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8755873393256210432) (13 pp, sha256 `5ec219092aa45bd9`, retrieved 2026-09-22, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/ams1117-5-0s-datasheet.pdf)
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