# LM2705MFX-ADJ

**Texas Instruments** · LED Drivers · SOT-23-5

LM2705MFX-ADJ 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 | input | Power switch input, the drain of the internal NMOS power switch, with an absolute maximum SW voltage of 21 V; minimize the metal trace area connected to this pin to reduce EMI. |
| 2 | GND | power_in | Ground, to be tied directly to the ground plane. |
| 3 | FB | input | Output voltage feedback input, where R1 = R2 × (VOUT / 1.237 V) - 1 sets the output voltage, with an absolute maximum FB voltage of 2 V. |
| 4 | SHDN | input | Active-low shutdown pin: drive above 1.1 V to enable the device and below 0.3 V to place it in low-power shutdown, with an absolute maximum SHDN voltage of 7.5 V. |
| 5 | VIN | power_in | Analog and power input supply pin, operating over 2.2 V to 7 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | LED Drivers |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `LM2705MFX-ADJ`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `lm2705mfx-adj-etched.step` / `lm2705mfx-adj-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2705mfx-adj.step` / `lm2705mfx-adj.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/lm2705) (23 pp, sha256 `b06074612fdc7aee`, retrieved 2026-10-11, 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/lm2705mfx-adj-datasheet.pdf)