JY1117E33AX

@@ -0,0 +1,52 @@+# JY1117E33AX++**Shenzhen JingYang** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-4++JY1117E33AX from Shenzhen JingYang, 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 | GND | power_in | Ground return for the fixed-output 3.3 V version. On the adjustable variant this same pin is the Adj feedback input; because JY1117E33AX is a fixed-mode part, it is tied to system ground. Per datasheet 'Ground only for Fixed-Mode'. |+| 2 | VOUT | power_out | Regulated 3.3 V output (typ 3.300 V, min 3.235 V, max 3.365 V at IOUT=10 mA). Rated for 1 A continuous. Requires a minimum 0.2 µF X7R/X5R MLCC (or 3.3 µF EL, 10 mΩ ≤ ESR ≤ 1 Ω) from this pin to ground for stability. The SOT-223 tab is internally connected to VOUT and serves as the heat-sink pad. |+| 3 | VIN | power_in | Regulator input supply, 2.7 V to 12 V operating (abs max -0.3 V to 15 V). Must be at least VOUT + 1.4 V (dropout) to regulate; datasheet recommends at least 1.5 V headroom above VOUT. A local input storage capacitor to ground is required to prevent the input from sagging below the dropout during load transients. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Shenzhen JingYang |+| Package | SOT-223-4 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `JY1117E33AXE33A`+- `JY1117E33AXEXX`+- `JY1117E33AXEXXA`+- `JY1117E33AXD33`+- `JY1117E33AXD33A`+- `JY1117E33AXDXX`+- `JY1117E33AXDXXA`+- `JY1117E33AXF33`+- `JY1117E33AXF33A`+- `JY1117E33AXFXX`+- `JY1117E33AXFXXA`++## CAD (KiCad official)++- Symbol: `JY1117E33AX`+- 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:** [Shenzhen JingYang datasheet](docs/jy1117e33ax-datasheet.pdf) (14 pp, sha256 `fe77cb471f1f490b`, 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/jy1117e33ax-datasheet.pdf)

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