# IL1117C-5.0

**IKSEMICON** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-4

IL1117C-5.0 from IKSEMICON, in a SOT-223-4. 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 | ADJ/GND | power_in | Adjust/ground terminal: it is the ground return on fixed versions, and on the adjustable version it is the ADJ pin, where the 1.25V reference sits between VOUT and ADJ and adjust pin current is 50 to 120 µA at Io = 10mA. |
| 2 | Output | power_out | Regulated output, which requires a minimum 10µF tantalum (or 50µF aluminum electrolytic) capacitor from VOUT to GND for stability; this pin is also connected to the heat sink tab, so the case is electrically at the output potential. |
| 3 | Input | power_in | Unregulated input supply, with an absolute maximum input voltage of 15V and a 10µF tantalum input bypass recommended. |
| 4 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | IKSEMICON |
| Package | SOT-223-4 |
| Category | Power Management (PMIC) |
| Pins | 4 |

## 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 |  | 4.9 | 5 | 5.1 | V | Io = 10mA to 1.0A, Vin = 6.5 to 12.0V | 2 |
| Line regulation |  |  | 4 | 10 | mV | Io =10mA, Vin = 6.5 to 12.0V | 2 |
| Load regulation |  |  | 5 | 15 | mV | Io = 10mA to 1.0A, Vin = 7.0V | 2 |
| Dropout voltage |  |  | 1.2 | 1.3 | V | Io = 1A (Tj = 25°C) | 2 |
| Dropout voltage |  |  | 1.2 | 1.55 | V | Io = 1A (Tj = -40°C to +125°C) | 2 |
| Current limit |  | 1000 |  |  | mA | Vin - Vo = 5V (Tj = 25°C) | 2 |
| Quiescent current |  |  | 5.2 | 10 | mA | Vin - Vo = 1.5V | 2 |
| Temperature drift |  |  |  | 0.5 | % | Tj = -40°C to +125°C | 2 |
| RMS output noise |  |  |  | 0.003 | %Vo | Bandwidth of 10Hz to 10kHz at 25°C | 2 |
| Ripple rejection ratio |  | 60 | 72 |  | dB | 120Hz input ripple (Cadj for ADJ) = 25uF; Vin - Vo = 5V, Io = 1.0A; Tj = -40°C to +125°C | 2 |
| Input voltage (absolute maximum) | VIN |  |  | 15 | V |  | 1 |
| Operating junction temperature range | TJ | -40 |  | 125 | °C |  | 1 |
| Thermal resistance junction-to-ambient (SOT-223) | ΘJA |  |  | 150 | °C/W |  | 1 |
| Thermal resistance junction-to-case (SOT-223) | ΘJC |  |  | 35 | °C/W |  | 1 |

## CAD (KiCad official)

- Symbol: `IL1117C-5.0`
- Footprint: `Package_TO_SOT_SMD:SOT-223`
- 3D model: SOT-223-4 (KiCad packages3D, STEP)
- 3D model files: `il1117c-5-0-etched.step` / `il1117c-5-0-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `il1117c-5-0.step` / `il1117c-5-0.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [IKSEMICON datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588911791660916736) (10 pp, sha256 `8aeaef3e5071b028`, retrieved 2026-10-09, 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/il1117c-5-0-datasheet.pdf)