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BL1117-50CX
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BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+45@@ -0,0 +1,45 @@+# BL1117-50CX++**BL Shanghai Belling** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-3++BL1117-50CX from BL Shanghai Belling, in a SOT-223-3. 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 | Device ground reference. Must be tied to the system ground for both the input and output bypass capacitor return paths. |+| 2 | Vout | power_out | Regulated output. Fixed 5.0V (±2%) at up to 1A load current. Requires a >=10uF tantalum or MLCC output capacitor (ESR 3mΩ-22Ω) for stability. Internal current limit ≥1A and thermal shutdown protect the device. |+| 3 | Vin | power_in | Unregulated input supply. Operating range up to Max 12V (absolute max 15V). Requires >=10uF tantalum or MLCC input bypass capacitor. Dropout is 1.3V typ at 1A (so Vin ≥ ~6.3V for a full-load 5.0V output). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | BL Shanghai Belling |+| Package | SOT-223-3 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `BL1117-50CXCX`+- `BL1117-50CXAX`+- `BL1117-50CXCY`+- `BL1117-50CXAY`++## CAD (KiCad official)++- Symbol: `BL1117-50CX`+- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`+- 3D model: SOT-223-3 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [BL Shanghai Belling datasheet](docs/bl1117-50cx-datasheet.pdf) (15 pp, sha256 `57ea14e7e58a4f29`, 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/bl1117-50cx-datasheet.pdf)
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