# SSP1117-2.5V

**Shanghai Siproin Microelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223

SSP1117-2.5V from Shanghai Siproin Microelectronics, 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 pin on the fixed 2.5V version (labelled ADJ/GND; it is the ADJ pin only on the adjustable version), returned to the input and output capacitor grounds. |
| 2 | VOUT | power_out | Regulated 2.5V output (2.45V to 2.55V for 0 to 1A load), with a recommended 10uF tantalum output capacitor for stability. |
| 3 | VIN | power_in | Input supply, recommended maximum 20V (absolute maximum 30V), with a recommended 10uF tantalum bypass capacitor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Siproin Microelectronics |
| 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 |
|---|---|---|---|---|---|---|---|
| Output voltage | Vout | 2.45 | 2.5 | 2.55 | V | 0≤Iout≤1A, Vin=4.5V | 4 |
| Quiescent current | Iq |  | 2 | 5 | mA | Vin=12V | 5 |
| Load regulation | △Vout |  | 4 | 16 | mV | Vin =4.0V, 10mA≤Iout≤1A | 5 |
| Line regulation | △Vout |  | 0.03 | 0.2 | %/V | Iout=10mA, 4.0V≤Vin≤12V | 4 |
| Dropout voltage | Vdrop |  | 1.15 | 1.3 | V | Iout =100mA | 5 |
| Dropout voltage | Vdrop |  | 1.3 | 1.5 | V | Iout=1A | 5 |
| Temperature coefficient | ΔV/ΔT | -100 |  | 100 | ppm |  | 5 |
| Thermal resistance junction-to-case | θJC |  | 20 |  | ℃/W | SOT-223 | 5 |
| Max input voltage |  |  |  | 30 | V |  | 3 |
| Max operating junction temperature | Tj |  |  | 150 | ℃ |  | 3 |
| Ambient temperature | Ta | -40 |  | 85 | ℃ |  | 3 |
| Storage temperature | Ts | -40 |  | 150 | ℃ |  | 3 |
| Lead temperature |  |  |  | 260 | ℃ | 10S | 3 |
| Recommended maximum input voltage |  |  |  | 20 | V |  | 3 |
| Recommended operating junction temperature | Tj | -20 |  | 125 | ℃ |  | 3 |
| Package thermal resistance |  |  |  | 20 | ℃/W | SOT-223 | 3 |

## CAD (KiCad official)

- Symbol: `SSP1117-2.5V`
- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`
- 3D model: SOT-223 (KiCad packages3D, STEP)
- 3D model files: `ssp1117-2-5v-etched.step` / `ssp1117-2-5v-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ssp1117-2-5v.step` / `ssp1117-2-5v.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shanghai Siproin Microelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588904178203049984) (9 pp, sha256 `4548d0eb79d83846`, retrieved 2026-10-19, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/ssp1117-2-5v-datasheet.pdf)