# LP2951ACMX

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

LP2951ACMX from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUT | output | Regulated output voltage, fixed 3V/3.3V/5V or programmable 1.24V to 29V with 100mA ensured output current. |
| 2 | SENSE | input | Output voltage sense input for internal feedback divider; tie to OUT for fixed voltage operation. |
| 3 | SHUTDOWN | input | Logic-compatible disable input; regulator enables below 0.7V and disables above 1.3V. |
| 4 | GND | power_in | Ground reference terminal, common connection point for return paths. |
| 5 | ERROR | output | Open-collector error flag output; pulls low when output drops 75-95mV below 1.235V reference threshold. |
| 6 | VTAP | output | Internal 1.235V reference voltage divider tap; tie to FEEDBACK pin for fixed voltage versions. |
| 7 | FEEDBACK | input | Voltage feedback input for programmable output regulation; -20nA typical bias current. |
| 8 | IN | power_in | Positive power supply input voltage, 2.3V to 30V absolute maximum range. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LP2951ACMX`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `lp2951acmx-etched.step` / `lp2951acmx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lp2951acmx.step` / `lp2951acmx.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/lp2950-n) (62 pp, sha256 `b9e1f8851a20b9c9`, retrieved 2026-09-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-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/lp2951acmx-datasheet.pdf)