# LM4132EMF-2.5

**Texas Instruments** · Voltage Reference · SOT-23-5

LM4132EMF-2.5 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 | N/C | unconnected | No connect pin; leave floating. |
| 2 | GND | power_in | Ground reference for the device. |
| 3 | EN | input | Enable pin: driving EN between 65% of VIN and VIN enables the reference, and 0 V to 35% of VIN puts it in shutdown (about 3 µA); EN must not exceed VIN, and the pin has an internal ~2 µA pullup so it may be left floating or tied to VIN. |
| 4 | VIN | power_in | Input supply; must be between VREF + 400 mV and 5.5 V (maximum input supply voltage 5.5 V) for ILOAD ≤ 10 mA, and an input capacitor between VIN and GND is required close to the device. |
| 5 | VREF | power_out | Precision voltage reference output, rated for up to 20 mA load current for the LM4132 (the output capacitor COUT is optional). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LM4132EMF-2.5`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `lm4132emf-2-5-etched.step` / `lm4132emf-2-5-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm4132emf-2-5.step` / `lm4132emf-2-5.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/lm4132) (44 pp, sha256 `4bd8402ff026fdf1`, retrieved 2026-10-12, 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/lm4132emf-2-5-datasheet.pdf)