# D1117-3.3

**Silicore(芯谷)** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223

D1117-3.3 from Silicore(芯谷), in a SOT-223. 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 (地) reference pin for the fixed-voltage D1117 version. |
| 2 | Vout | power_out | Regulated output pin, with the D1117 rated for an output current capability of 1.0 A. |
| 3 | Vin | power_in | Input pin, with an absolute maximum input voltage of 18 V and a recommended input voltage range up to 15 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Silicore(芯谷) |
| Package | SOT-223 |
| 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 |
|---|---|---|---|---|---|---|---|
| 输出电压 Vout, D1117-3.3V (first printed value of each pair) | Vout | 3.25 | 3.3 | 3.35 | V | Iout=10mA,Vin=5V; 0≤Iout≤1.0A ,4.75V≤Vin≤12V | 4 |
| 输出电压 Vout, D1117-3.3V (second printed value of each pair) | Vout | 3.234 | 3.3 | 3.366 | V | Iout=10mA,Vin=5V; 0≤Iout≤1.0A ,4.75V≤Vin≤12V | 4 |
| 输出电压精度 (output voltage accuracy) |  | -1.5 |  | 1.5 | % |  | 1 |
| 电压线性度 LNR, fixed version | LNR |  | 4 | 12 | mV | Iout=10mA, Vout+1.4V≤Vin≤12V | 4 |
| 负载调整率 LDR, fixed version | LDR |  | 6 | 12 | mV | Vin=Vout+1.4V, 0≤Iout≤1.0A | 5 |
| 输入输出电压差 Vin-Vout (100mA) | Vin-Vout |  | 1 | 1.2 | V | ΔVout, ΔVref=1%,Iout=100mA | 5 |
| 输入输出电压差 Vin-Vout (500mA) | Vin-Vout |  | 1.05 | 1.25 | V | ΔVout, ΔVref=1%,Iout=500mA | 5 |
| 输入输出电压差 Vin-Vout (1.0A) | Vin-Vout |  | 1.1 | 1.3 | V | ΔVout, ΔVref=1%,Iout=1.0A | 5 |
| 最大负载电流 Ilimit | Ilimit |  | 1 | 1.4 | A | Vin-Vout=2V, Tj=25℃ | 5 |
| 最小负载电流 (Note4) |  |  | 5 | 10 | mA |  | 5 |
| 静态电流 Iq, fixed version | Iq |  | 4 | 8 | mA | Vin-Vout=1.25V | 5 |
| 热稳定性 Ts | Ts |  | 0.5 |  | % |  | 5 |
| 基准电压温度漂移系数 (temperature drift coefficient, from body text) |  |  |  | 100 | ppm/℃ |  | 6 |
| 输入电压范围 (recommended) | Vin |  |  | 15 | V |  | 4 |
| 环境温度 (recommended) | TA | -40 |  | 125 | C |  | 4 |
| 最大输入电压 (absolute maximum) | Vin |  |  | 18 | V | Ta=25℃ | 3 |
| 结温 (absolute maximum) | TJ |  |  | 150 | C | Ta=25℃ | 3 |
| 环境温度 (absolute maximum) | TA |  |  | 140 | C | Ta=25℃ | 3 |
| 贮存温度 (absolute maximum) | Ts | -65 |  | 150 | C | Ta=25℃ | 3 |
| 焊接温度 (absolute maximum) |  |  |  | 300 | C | 10S | 3 |
| 热阻 结-环境 θ-JA, SOT223 | θ-JA |  | 120 |  | C/W | 无散热片 (no heatsink) | 4 |

## CAD (KiCad official)

- Symbol: `D1117-3.3`
- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`
- 3D model: SOT-223 (KiCad packages3D, STEP)
- 3D model files: `d1117-3-3-etched.step` / `d1117-3-3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `d1117-3-3.step` / `d1117-3-3.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Silicore(芯谷) datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590920943852744704) (13 pp, sha256 `021e47769f39235d`, retrieved 2026-10-17, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/d1117-3-3-datasheet.pdf)