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AMS1117-2.5V
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MSKSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+45@@ -0,0 +1,45 @@+# AMS1117-2.5V++**MSKSEMI AMS1117 2 5V** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223++AMS1117-2.5V from MSKSEMI AMS1117 2 5V, in a SOT-223. 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 / VSS reference pin. On the fixed 2.5 V version this pin is the device ground return (the datasheet labels the pin 'VSS/ADJ' because the same silicon is used for the adjustable variant, where it becomes the ADJ feedback input). |+| 2 | VOUT | power_out | Regulated 2.5 V output (typ. 2.5 V, min 2.45 V, max 2.55 V at Vin=3.8 V, 0 ≤ Iout ≤ 1 A). Requires a ~10 uF tantalum output capacitor for stability. |+| 3 | VIN | power_in | Unregulated input voltage. For the 2.5 V variant, Vin must be ≥ 3.8 V for full regulation (dropout ~1.3 V @ 1 A). Absolute maximum input voltage is 18 V; recommended maximum operating input is 15 V. Requires a ~10 uF tantalum bypass capacitor. |+| 4 | VOUT | power_out | Regulated 2.5 V output; electrically connected to pin 2. This is the large tab pad on the SOT-223 package and also serves as the primary thermal path to the PCB copper pour. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | MSKSEMI AMS1117 2 5V |+| Package | SOT-223 |+| Category | PMIC |+| Pins | 4 |++## Ordering variants++- `AMS1117-2.5VAMS1117-25`+- `AMS1117-2.5VAMS1117CD-25`+- `AMS1117-2.5VAMS1117-25`++## CAD (KiCad official)++- Symbol: `AMS1117-2.5V`+- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`+- 3D model: SOT-223 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [MSKSEMI AMS1117 2 5V datasheet](docs/ams1117-2-5v-datasheet.pdf) (14 pp, sha256 `768f1a5d913d6211`, 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/ams1117-2-5v-datasheet.pdf)
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