component
BL1117-12CY
Public Made by Adomby adom
BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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BL1117-12CY
BL Shanghai Belling · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)
BL1117-12CY from BL Shanghai Belling, in a TO-252-2(DPAK). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground pin of the fixed-version regulator (BL1117-12V); the datasheet lists it as Ground for the fixed version. |
| 2 | Vout | power_out | Regulated 12V output of the BL1117-12V; the BL1117 series is rated for up to 1A load current with Cout=10uF recommended. |
| 3 | Vin | power_in | Unregulated input supply; the BL1117-12V maximum input voltage is 20V (other series versions are limited to 12V), with Cin=10uF recommended. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | TO-252-2(DPAK) |
| Category | Power Management (PMIC) |
| Pins | 3 |
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 (BL1117-12.0V) | Vout | 11.76 | 12 | 12.24 | V | 0≤Iout≤1A, Vin=14V | 3 |
| Line Regulation (BL1117-12.0V) | ΔVout | 0.1 | 0.2 | %/V | Iout=10mA, 13.5V≤Vin≤20V | 3 | |
| Load Regulation (BL1117-12.0V) | ΔVout | 10 | 30 | mV | Vin=13.5V, 10mA≤Iout≤1A | 3 | |
| Quiescent Current (BL1117-12.0V) | Iq | 1 | 2 | 5 | mA | Vin =20V | 4 |
| Dropout Voltage | Vdrop | 1.23 | 1.3 | V | Iout=100mA | 4 | |
| Dropout Voltage | Vdrop | 1.3 | 1.5 | V | Iout=1A | 4 | |
| Temperature coefficient | ΔV/ΔT | -100 | 100 | ppm | 4 | ||
| Current Limit | Ilimit | 1 | A | Vin-Vout=2V, Tj=25°C | 4 | ||
| Supply Voltage Rejection | SVR | 60 | dB | f = 120Hz, VIN − VOUT = 3V + 1VPP Ripple | 4 | ||
| Max Input Voltage | 15 | V | 2 | ||||
| Max Operating Junction Temperature | Tj | 150 | °C | 2 | |||
| Storage Temperature | Ts | -40 | 150 | °C | 2 | ||
| Lead Temperature | 260 | °C | 10 s | 2 | |||
| Input Voltage Range (BL1117-12V exception) | Vin | 20 | V | Exception stated for BL1117-12V | 2 | ||
| Operating Junction Temperature | Tj | -20 | 125 | °C | 2 | ||
| Ambient Temperature | Ta | -40 | 85 | °C | 2 | ||
| Thermal Resistance Junction-to-Case (TO-252) | θJC | 10 | °C/W | 4 | |||
| Thermal Resistance Junction-to-Ambient (TO-252, no heat sink) | θJA | 92 | °C/W | No air flow, no heat sink | 4 |
CAD (KiCad official)
- Symbol:
BL1117-12CY - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)
- 3D model files:
bl1117-12cy-etched.step/bl1117-12cy-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl1117-12cy.step/bl1117-12cy.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BL Shanghai Belling datasheet (15 pp, sha256
a7fe7f5c0846d4ca, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# BL1117-12CY
**BL Shanghai Belling** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)
BL1117-12CY from BL Shanghai Belling, in a TO-252-2(DPAK). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground pin of the fixed-version regulator (BL1117-12V); the datasheet lists it as Ground for the fixed version. |
| 2 | Vout | power_out | Regulated 12V output of the BL1117-12V; the BL1117 series is rated for up to 1A load current with Cout=10uF recommended. |
| 3 | Vin | power_in | Unregulated input supply; the BL1117-12V maximum input voltage is 20V (other series versions are limited to 12V), with Cin=10uF recommended. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | TO-252-2(DPAK) |
| Category | Power Management (PMIC) |
| Pins | 3 |
## 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 (BL1117-12.0V) | Vout | 11.76 | 12 | 12.24 | V | 0≤Iout≤1A, Vin=14V | 3 |
| Line Regulation (BL1117-12.0V) | ΔVout | | 0.1 | 0.2 | %/V | Iout=10mA, 13.5V≤Vin≤20V | 3 |
| Load Regulation (BL1117-12.0V) | ΔVout | | 10 | 30 | mV | Vin=13.5V, 10mA≤Iout≤1A | 3 |
| Quiescent Current (BL1117-12.0V) | Iq | 1 | 2 | 5 | mA | Vin =20V | 4 |
| Dropout Voltage | Vdrop | | 1.23 | 1.3 | V | Iout=100mA | 4 |
| Dropout Voltage | Vdrop | | 1.3 | 1.5 | V | Iout=1A | 4 |
| Temperature coefficient | ΔV/ΔT | -100 | | 100 | ppm | | 4 |
| Current Limit | Ilimit | | 1 | | A | Vin-Vout=2V, Tj=25°C | 4 |
| Supply Voltage Rejection | SVR | | 60 | | dB | f = 120Hz, VIN − VOUT = 3V + 1VPP Ripple | 4 |
| Max Input Voltage | | | | 15 | V | | 2 |
| Max Operating Junction Temperature | Tj | | | 150 | °C | | 2 |
| Storage Temperature | Ts | -40 | | 150 | °C | | 2 |
| Lead Temperature | | | | 260 | °C | 10 s | 2 |
| Input Voltage Range (BL1117-12V exception) | Vin | | | 20 | V | Exception stated for BL1117-12V | 2 |
| Operating Junction Temperature | Tj | -20 | | 125 | °C | | 2 |
| Ambient Temperature | Ta | -40 | | 85 | °C | | 2 |
| Thermal Resistance Junction-to-Case (TO-252) | θJC | | 10 | | °C/W | | 4 |
| Thermal Resistance Junction-to-Ambient (TO-252, no heat sink) | θJA | | 92 | | °C/W | No air flow, no heat sink | 4 |
## CAD (KiCad official)
- Symbol: `BL1117-12CY`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)
- 3D model files: `bl1117-12cy-etched.step` / `bl1117-12cy-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bl1117-12cy.step` / `bl1117-12cy.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [BL Shanghai Belling datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588909456914042880) (15 pp, sha256 `a7fe7f5c0846d4ca`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/bl1117-12cy-datasheet.pdf)