# STMPS2151TTR

**STMicroelectronics** · Power Distribution Switches · MSOP-8

STMPS2151TTR from STMicroelectronics, in a MSOP-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 | GND | power_in | Ground reference pin for the power switch. |
| 2 | IN | power_in | Power switch input, specified for 2.7 to 5.5 V. |
| 3 | IN | power_in | Second power switch input pin, specified for 2.7 to 5.5 V. |
| 4 | EN | input | Enable input for the power switch; CMOS and TTL compatible, and active high for the STMPS2151 per Table 1. |
| 5 | FAULT | output | Open-drain FAULT indicator, active low; asserts low after a 10 ms blanking period for current-limit faults, and immediately for overtemperature or undervoltage faults. |
| 6 | OUT | power_out | Output of the power switch, rated for 500 mA continuous output current for the STMPS2151. |
| 7 | OUT | power_out | Output of the power switch, rated for 500 mA continuous output current for the STMPS2151. |
| 8 | OUT | power_out | Output of the power switch, rated for 500 mA continuous output current for the STMPS2151. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | MSOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `STMPS2151TTR`
- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`
- 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files: `stmps2151ttr-etched.step` / `stmps2151ttr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stmps2151ttr.step` / `stmps2151ttr.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588927075940249600) (37 pp, sha256 `700138497f100d55`, retrieved 2026-10-08, 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/stmps2151ttr-datasheet.pdf)