# TS2431ILT

**STMicroelectronics** · Voltage Reference · SOT-23

TS2431ILT from STMicroelectronics, in a SOT-23. 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 | Cathode | passive | Cathode of the shunt reference; cathode-to-anode voltage VKA ranges from VREF to 24 V (absolute maximum 25 V) with cathode operating current of 1 to 100 mA. |
| 2 | Reference | input | Reference input that sets the output voltage via an external resistor bridge; reference input voltage is 2.5 V typical and reference input current range is 0.05 to 10 mA absolute maximum. |
| 3 | Anode | passive | Anode of the shunt reference, connected to the lowest potential (ground) of the circuit. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `TS2431ILT`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `ts2431ilt-etched.step` / `ts2431ilt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ts2431ilt.step` / `ts2431ilt.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588925746169450496) (16 pp, sha256 `dc06dd59a8b41517`, retrieved 2026-10-07, 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/ts2431ilt-datasheet.pdf)