# LM385BM-2.5

**Texas Instruments** · Voltage Reference · SOIC-8

LM385BM-2.5 from Texas Instruments, in a SOIC-8. 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 | NC | unconnected | No connection on the SOIC (D0008A) package. |
| 2 | NC | unconnected | No connection on the SOIC (D0008A) package. |
| 3 | NC | unconnected | No connection on the SOIC (D0008A) package. |
| 4 | - | passive | Negative (anode) terminal of the 2-terminal 2.5V band-gap reference, operating over 20 µA to 20 mA reverse current. |
| 5 | NC | unconnected | No connection on the SOIC (D0008A) package. |
| 6 | NC | unconnected | No connection on the SOIC (D0008A) package. |
| 7 | NC | unconnected | No connection on the SOIC (D0008A) package. |
| 8 | + | passive | Positive (cathode) terminal of the 2-terminal 2.5V band-gap reference, operating over 20 µA to 20 mA reverse current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `LM385BM-2.5`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `lm385bm-2-5-etched.step` / `lm385bm-2-5-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm385bm-2-5.step` / `lm385bm-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/lm285-2.5-n) (45 pp, sha256 `c62a9316d9d7e83e`, retrieved 2026-10-08, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/lm385bm-2-5-datasheet.pdf)