BL1117C-12CX
Public Made by Adomby adom
BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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README
markdownBL1117C-12CX
BL Shanghai Belling · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223
BL1117C-12CX from BL Shanghai Belling, in a SOT-223. 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. Connect to system ground. On SOT-223 the tab is typically tied to pin 2 (Vout); the discrete GND pin is pin 1 on the fixed-output variant. |
| 2 | Vout | power_out | Regulated 1.2V output (±2%, min 1.176V, max 1.224V) at up to 1A load current. Requires a 10uF tantalum bypass capacitor to ground for stability. |
| 3 | Vin | power_in | Unregulated input voltage supply. Recommended min 2.7V (for 1.2V output), max 12V. Dropout is 1.3V at 1A load. Requires a 10uF tantalum bypass capacitor to ground. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | SOT-223 |
| Category | PMIC |
| Pins | 3 |
Ordering variants
Same part, different packaging or reel option.
BL1117C-12CXBL1117C-12CX12CYBL1117C-12CX12CM
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output Voltage | VOUT | 11.76 | 12 | 12.24 | V | 0≤Iout≤1A , Vin=14V | 3 |
| Line Regulation | ΔVout | 0.1 | 0.2 | %/V | Iout=10mA, 13.5V≤Vin≤20V | 3 | |
| Load Regulation | ΔVout | 10 | 30 | mV | Vin=13.5V, 10mA≤Iout≤1A | 3 | |
| Dropout Voltage | Vdrop | 1.23 | 1.3 | V | Iout=100mA | 4 | |
| Dropout Voltage | Vdrop | 1.3 | 1.5 | V | Iout=1A | 4 | |
| Quiescent Current | Iq | 2 | 5 | mA | BL1117C-12.0V, Vin =20V | 4 | |
| Temperature Coefficient | ΔV/ΔT | -100 | 100 | ppm | 4 | ||
| Maximum Input Voltage (absolute) | 15 | V | 2 | ||||
| Maximum Input Voltage (recommended, BL1117C-12V exception) | 20 | V | Exception stated for BL1117C-12V; general recommended max is 12V for other versions | 2 | |||
| Operating Junction Temperature (recommended) | Tj | -20 | 125 | °C | 2 | ||
| Max Operating Junction Temperature | Tj | 150 | °C | 2 | |||
| Ambient Temperature | Ta | -40 | 85 | °C | 2 | ||
| Storage Temperature | Ts | -40 | 150 | °C | 2 | ||
| Lead Temperature | 260 | °C | 10S | 2 | |||
| Current Limit | Ilimit | 1 | A | Vin-Vout=2V, Tj=25°C | 4 | ||
| Package Thermal Resistance SOT-223 | 20 | °C/W | 2 | ||||
| Thermal Resistance Junction-to-Case SOT-223 | θJC | 20 | °C/W | 4 |
CAD (KiCad official)
- Symbol:
BL1117C-12CX - Footprint:
Package_TO_SOT_SMD:SOT-223-3_TabPin2 - 3D model: SOT-223 (KiCad packages3D, STEP)
- 3D model files:
bl1117c-12cx-etched.step/bl1117c-12cx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl1117c-12cx.step/bl1117c-12cx.glbare the bare package body.
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
bl1117c-12cx.step |
64 KB | You want the bare part, or you mark your own boards. |
bl1117c-12cx-etched.step |
1.6 MB | You want the part with BL1117C-12CX already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 415 faces against 75 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BL Shanghai Belling datasheet (9 pp, sha256
d00b9330975215ce, 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).