LD1117D33CTR

@@ -0,0 +1,48 @@+# LD1117D33CTR++**STMicroelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOIC-8++LD1117D33CTR from STMicroelectronics, in a SOIC-8. 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 pin. Reference for the internal band-gap and the 3.3 V output. Quiescent current returns through this pin. |+| 2 | VOUT | power_out | Regulated 3.3 V output (typ. 3.3 V, tolerance +/-1% at 25 degC). Sources up to 800 mA continuous; requires a 10 uF minimum output capacitor for loop stability. Electrically common with the DPAK tab. |+| 3 | VIN | power_in | Unregulated DC input supply. Operating range up to 15 V (18 V absolute max when IOUT < 20 mA); a 100 nF input decoupling capacitor is recommended. Dropout is typically 1.1 V at 800 mA load. |+| TAB | VOUT | power_out | Exposed metal tab used as the primary thermal path to the PCB copper pour. Electrically tied to VOUT internally, so any copper it contacts is at the regulated output potential. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | SOIC-8 |+| Category | PMIC |+| Pins | 4 |++## Ordering variants++- `LD1117D33CTR`+- `LD1117D33CTRLD1117DT33CTR`+- `LD1117D33CTRLD1117S33CTR`+- `LD1117D33CTRLD1117S33TR`+- `LD1117D33CTRLD1117S8-33TR`+- `LD1117D33CTRLD1117V33`++## CAD (KiCad official)++- Symbol: `LD1117D33CTR`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/ld1117d33ctr.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/ld1117d33ctr-datasheet.pdf)

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