# XTP2021-120AS2CT

**XTX** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

XTP2021-120AS2CT from XTX, in a SOT-23-5. 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 | VIN | power_in | Input of supply voltage; the datasheet specifies a wide input range of 1.8V to 5.5V. |
| 2 | GND | power_in | Ground reference connection for the regulator. |
| 3 | EN | input | Enable control input; driving it low turns the regulator off and reduces current to only 100nA (typical). |
| 4 | NC | unconnected | No internal connection. |
| 5 | VOUT | power_out | Output of the regulator; this variant (XTP2021-1.2, 300mA output current) has a fixed 1.2V output. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | XTX |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |

## 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 accuracy |  | -2 |  | 2 | % |  | 2 |
| Input voltage range |  | 1.8 |  | 5.5 | V |  | 2 |
| Operating temperature range |  | -40 |  | 85 | ℃ |  | 2 |

## CAD (KiCad official)

- Symbol: `XTP2021-120AS2CT`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `xtp2021-120as2ct-etched.step` / `xtp2021-120as2ct-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `xtp2021-120as2ct.step` / `xtp2021-120as2ct.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [XTX datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603000808254959616) (4 pp, sha256 `f73838f42d31fa06`, retrieved 2026-10-17, 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/xtp2021-120as2ct-datasheet.pdf)