component
BL1117-CX
Public Made by Adomby adom
BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-4. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
← Commit history
README.mdadded+43@@ -0,0 +1,43 @@+# BL1117-CX++**BL Shanghai Belling** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-4++BL1117-CX from BL Shanghai Belling, in a SOT-223-4. 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/ADJ | power_in | Ground (fixed-output versions) or Adjust feedback pin (BL1117-ADJ). On the ADJ variant this pin sets Vout via an external divider following Vout = 1.25 × (1 + R2/R1) + I_ADJ × R2, with I_ADJ typically 55 µA (max 120 µA). |+| 2 | Vout | power_out | Regulated output. Delivers up to 1A with 1.3V typical dropout at 1A; recommended output capacitor is 10µF tantalum or MLCC (ESR 3mΩ-22Ω). SOT-223 tab is internally connected to this pin. |+| 3 | Vin | power_in | Unregulated input supply. Absolute max 18V (20V for BL1117-12V); recommended input range up to 16V. A 10µF tantalum or MLCC bypass capacitor is recommended close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | BL Shanghai Belling |+| Package | SOT-223-4 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `BL1117-CXX`+- `BL1117-CXY`++## CAD (KiCad official)++- Symbol: `BL1117-CX`+- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`+- 3D model: SOT-223-4 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [BL Shanghai Belling datasheet](docs/bl1117-cx-datasheet.pdf) (19 pp, sha256 `0a764da9e94a8c7e`, 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-cx-datasheet.pdf)
page.jsonadded+34@@ -0,0 +1,34 @@+{+ "slug": "bl1117-cx",+ "version": "0.1.0",+ "type": "component",+ "description": "BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-4. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "pmic",+ "bl1117-cx"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "bl1117-cx.kicad_sym",+ "bl1117-cx.kicad_mod",+ "bl1117-cx.glb",+ "bl1117-cx.step",+ "bl1117-cx.lbr",+ "docs/hero.png",+ "docs/bl1117-cx-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "visibility": "public",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}