# LP2989IMX-1.8

**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOIC-8

LP2989IMX-1.8 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 | BYPASS | input | Bypass capacitor input used to connect the external noise-reduction capacitor. |
| 2 | N/C | unconnected | Reserved for post-packaging test and calibration of VOUT accuracy; it must be left floating, not connected to any potential or ground, and pin continuity testing on it is discouraged. |
| 3 | GROUND | power_in | Ground pin for the regulator. |
| 4 | INPUT | power_in | Regulator power input. |
| 5 | OUTPUT | power_out | Regulated output voltage. |
| 6 | SENSE | input | Feedback voltage sense input. |
| 7 | ERROR | output | Error signal output. |
| 8 | SHUTDOWN | input | Shutdown input. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LP2989IMX-1.8`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `lp2989imx-1-8-etched.step` / `lp2989imx-1-8-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lp2989imx-1-8.step` / `lp2989imx-1-8.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/lp2989lv) (28 pp, sha256 `78ea525676a33333`, 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/lp2989imx-1-8-datasheet.pdf)