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AMS1117CD-ADJ
Public Made by Adomby adom
UMW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+68@@ -0,0 +1,68 @@+# AMS1117CD-ADJ++**UMW** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2++AMS1117CD-ADJ from UMW, in a TO-252-2. 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 | ADJ | input | Adjust pin. Feedback input for the internal error amplifier; connect to the tap of an external R1/R2 divider from VOUT to GND to set output voltage per VOUT = VREF x (1 + R2/R1) + IADJ x R2, where VREF = 1.25V (typ) and IADJ ~= 60uA (typ, 120uA max). |+| 2 | VOUT | power_out | Regulated output. Supplies up to 1A of regulated current. Requires a 22uF tantalum output capacitor for stability. Output is set by external divider on the ADJ variant; internal reference is 1.25V (typ). |+| 3 | VIN | power_in | Input supply. Absolute maximum 18V; recommended operating maximum 12V. Dropout voltage typ 1.2V at 1A. Recommend 10uF bypass capacitor from VIN to GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | UMW |+| Package | TO-252-2 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++Same part, different packaging or reel option.++- `AMS1117CD-ADJ`+- `AMS1117CD-ADJCD-1.2`+- `AMS1117CD-ADJCD-1.5`+- `AMS1117CD-ADJCD-1.8`+- `AMS1117CD-ADJCD-2.5`+- `AMS1117CD-ADJCD-3.3`+- `AMS1117CD-ADJCD-5.0`+- `AMS1117CD-ADJ-1.2`+- `AMS1117CD-ADJ-1.5`+- `AMS1117CD-ADJ-1.8`+- `AMS1117CD-ADJ-2.5`+- `AMS1117CD-ADJ-3.3`+- `AMS1117CD-ADJ-5.0`+- `AMS1117CD-ADJS-1.2`+- `AMS1117CD-ADJS-1.5`+- `AMS1117CD-ADJS-1.8`+- `AMS1117CD-ADJS-2.5`+- `AMS1117CD-ADJS-3.3`+- `AMS1117CD-ADJS-5.0`++## Related parts (NOT interchangeable)++The extractor listed these alongside AMS1117CD-ADJ, but they are **different parts** with different electrical characteristics. Do not order them as substitutes.++- `AMS1117CD-ADJS-ADJ`++## CAD (KiCad official)++- Symbol: `AMS1117CD-ADJ`+- Footprint: `Package_TO_SOT_SMD:TO-252-2`+- 3D model: TO-252-2 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [UMW datasheet](docs/ams1117cd-adj-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/ams1117cd-adj-datasheet.pdf)
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