LD1117DT33TR

@@ -0,0 +1,47 @@+# LD1117DT33TR++**STMicroelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2++LD1117DT33TR from STMicroelectronics, 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 | GND | power_in | Ground / common return. Reference for both the input and 3.3 V output. |+| 2 | VOUT | power_out | Regulated 3.3 V output, up to 800 mA. Requires a 10 µF minimum output capacitor for loop stability. Electrically tied to the DPAK TAB. |+| 3 | VIN | power_in | Unregulated DC input, 4.3 V to 15 V typical (absolute max 15 V continuous, 18 V with IOUT < 20 mA). A 100 nF input decoupling capacitor is recommended. |+| TAB | VOUT | power_out | DPAK metal tab, electrically connected to VOUT. Serves as the primary heat-sinking path (RthJC = 8 °C/W). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | TO-252-2 |+| Category | PMIC |+| Pins | 4 |++## Ordering variants++- `LD1117DT33TRDT33TR`+- `LD1117DT33TRDT33-TR`+- `LD1117DT33TRS33TR`+- `LD1117DT33TRD33TR`+- `LD1117DT33TRV33`++## CAD (KiCad official)++- Symbol: `LD1117DT33TR`+- 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:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/ld1117dt33tr.pdf) (44 pp, sha256 `1b80923ec6ca9161`, retrieved 2026-08-17, tier: manufacturer)+- **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/ld1117dt33tr-datasheet.pdf)

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