LD1117DT33CTR

@@ -0,0 +1,50 @@+# LD1117DT33CTR++**STMicroelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DPAK++LD1117DT33CTR from STMicroelectronics, in a DPAK. 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 return for the regulator. On the fixed-voltage (LD1117-33) versions this pin serves as the device ground; on the adjustable LD1117 the same pin is the ADJ (feedback) input tied to VREF = 1.25 V. |+| 2 | VOUT | power_out | Regulated 3.3 V output. Supplies up to 800 mA (typ. 950 mA, max 1300 mA) at Vin − Vout = 5 V, TJ = 25 °C. A minimum 10 µF output capacitor is required for loop stability. |+| 3 | VIN | power_in | Unregulated DC input supply. Operating input voltage up to 15 V; absolute maximum 15 V (18 V permitted only when IOUT < 20 mA). A 100 nF input decoupling capacitor is recommended. |+| TAB | VOUT | power_out | Exposed metal tab used as the primary thermal path. Electrically connected to VOUT internally, so any heatsink/copper pour on the tab is at the regulated output potential (not ground). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | DPAK |+| Category | PMIC |+| Pins | 4 |++## Ordering variants++- `LD1117DT33CTRDT33CTR`+- `LD1117DT33CTRDT33TR`+- `LD1117DT33CTRS33TR`+- `LD1117DT33CTRS33CTR`+- `LD1117DT33CTRV33`+- `LD1117DT33CTRV33C`+- `LD1117DT33CTRD33TR`+- `LD1117DT33CTRD33CTR`++## CAD (KiCad official)++- Symbol: `LD1117DT33CTR`+- Footprint: `Package_TO_SOT_SMD:TO-252-2`+- 3D model: DPAK (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/ld1117dt33ctr.pdf) (46 pp, sha256 `eb9bdaeee6a99a12`, 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/ld1117dt33ctr-datasheet.pdf)

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