# LM27313XQMFX

**Texas Instruments** · DC-DC Converters · SOT-23-5

LM27313XQMFX from Texas Instruments, 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 | SW | output | Drain of the internal FET switch with maximum voltage rating of 30 V. |
| 2 | GND | power_in | Analog and power ground. |
| 3 | FB | input | Feedback point that connects to external resistive divider to set VOUT with voltage range −0.4 to 6 V. |
| 4 | SHDN | input | Shutdown control input with recommended voltage range 0 to VIN; connect to VIN if this feature is not used. |
| 5 | VIN | power_in | Analog and power input with recommended operating voltage range 2.7 to 14 V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LM27313XQMFX`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `lm27313xqmfx-etched.step` / `lm27313xqmfx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm27313xqmfx.step` / `lm27313xqmfx.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm27313-q1) (26 pp, sha256 `ab9c9334a2ce8473`, retrieved 2026-10-01, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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/lm27313xqmfx-datasheet.pdf)