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BL1117C-33CM
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BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3L. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+59@@ -0,0 +1,59 @@+# BL1117C-33CM++**BL Shanghai Belling** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3L++BL1117C-33CM from BL Shanghai Belling, in a SOT-89-3L. 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 for the regulator. Return path for both quiescent current (~2mA typ) and the regulated load current up to 1A. |+| 2 | Vout | power_out | Regulated 3.3V output (3.234V-3.366V, ±2%) at up to 1A. A 10 µF tantalum output capacitor to GND is required for stability. |+| 3 | Vin | power_in | Unregulated input supply. Recommended operating range up to 12V (absolute max 15V). A 10 µF tantalum bypass capacitor to GND is recommended. Requires Vin ≥ 4.8V for 3.3V regulation at 1A (dropout 1.3V typ, 1.5V max). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | BL Shanghai Belling |+| Package | SOT-89-3L |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `BL1117C-33CM33CM`+- `BL1117C-33CM33AM`+- `BL1117C-33CM12CM`+- `BL1117C-33CM18CM`+- `BL1117C-33CM25CM`+- `BL1117C-33CM50CM`+- `BL1117C-33CM33CX`+- `BL1117C-33CM33AX`+- `BL1117C-33CM12CX`+- `BL1117C-33CM18CX`+- `BL1117C-33CM25CX`+- `BL1117C-33CM50CX`+- `BL1117C-33CM33CY`+- `BL1117C-33CM33AY`+- `BL1117C-33CM12CY`+- `BL1117C-33CM18CY`+- `BL1117C-33CM25CY`+- `BL1117C-33CM50CY`++## CAD (KiCad official)++- Symbol: `BL1117C-33CM`+- Footprint: `Package_TO_SOT_SMD:SOT-89-3`+- 3D model: SOT-89-3L (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [BL Shanghai Belling datasheet](docs/bl1117c-33cm-datasheet.pdf) (11 pp, sha256 `75593a439c9d03a8`, 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/bl1117c-33cm-datasheet.pdf)
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