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BL1117-25CX
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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 @@+# BL1117-25CX++**BL Shanghai Belling** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-3++BL1117-25CX 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 | Ground / device return. Also the reference node for the internal bandgap and output divider. Connected to the SOT-223 tab (pin 2 electrically ties to Vout on SOT-223, tab is GND on this pinout convention per the datasheet's fixed-version table). |+| 2 | Vout | power_out | Regulated 2.5V output, capable of sourcing up to 1A. Requires a ≥10µF tantalum or MLCC output capacitor for stability (ESR 3mΩ-22Ω). |+| 3 | Vin | power_in | Unregulated input supply. Operating range up to 12V max (15V absolute max); Vin must be ≥ Vout + Vdropout (≈1.3V at 1A). A ≥10µF bypass capacitor is recommended at this pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | BL Shanghai Belling |+| Package | SOT-223-3 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `BL1117-25CX25CX`+- `BL1117-25CX25AX`+- `BL1117-25CX25CY`+- `BL1117-25CX25AY`++## CAD (KiCad official)++- Symbol: `BL1117-25CX`+- 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/bl1117-25cx-datasheet.pdf) (15 pp, sha256 `a7fe7f5c0846d4ca`, 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/bl1117-25cx-datasheet.pdf)
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