AMS1117-1.2S

@@ -0,0 +1,44 @@+# AMS1117-1.2S++**UMW** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89++AMS1117-1.2S 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 for the fixed-output version. On the adjustable variant this pin is the ADJ feedback input; on the AMS1117-1.2 (fixed) it is tied internally as the device ground return. |+| 2 | VOUT | power_out | Regulated 1.2V output (1.176V to 1.224V at IOUT=10mA, VIN=3.2V, TJ=25°C). Rated for up to 1A load current. Requires a 22µF tantalum output capacitor for stability. |+| 3 | VIN | power_in | Unregulated input supply. Absolute maximum 18V; recommended operating input 12V. Typical dropout of 1.2V at 1A, so VIN must exceed VOUT by at least this margin. A 10µF input bypass capacitor is recommended. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | UMW |+| Package | SOT-89 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `AMS1117-1.2SS`+- `AMS1117-1.2S`+- `AMS1117-1.2SCD`++## CAD (KiCad official)++- Symbol: `AMS1117-1.2S`+- 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:** [UMW datasheet](docs/ams1117-1-2s-datasheet.pdf) (13 pp, sha256 `5ec219092aa45bd9`, 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/ams1117-1-2s-datasheet.pdf)

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