# LM4050AIM3-10

**Texas Instruments** · Voltage Reference · SOT-23-3

LM4050AIM3-10 from Texas Instruments, in a SOT-23-3. 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 | bidirectional | Cathode is the shunt-current and input-voltage pin; the reference voltage is regulated between cathode and anode as a function of the current forced into the cathode, which must stay within the minimum operating current (100 µA for the 10 V option) and the 15 mA maximum operating current. |
| 2 | Anode | power_in | Anode is the general-purpose pin, normally connected to ground, and is the reference terminal opposite the cathode; the datasheet notes a parasitic Schottky diode between pin 2 and pin 3 in this package. |
| 3 | NC | unconnected | No internal connection; this pin must be left floating or connected to pin 2 (anode), and TI recommends tying it to the anode in applications with high EMI or significant high-frequency switching noise. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LM4050AIM3-10`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `lm4050aim3-10-etched.step` / `lm4050aim3-10-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm4050aim3-10.step` / `lm4050aim3-10.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/lm4050-n) (47 pp, sha256 `02a99aa1f022863b`, retrieved 2026-10-11, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/lm4050aim3-10-datasheet.pdf)