# LTC8551-MS

**MSKSEMI** · Operational Amplifier · SOT-23-5

LTC8551-MS from MSKSEMI, 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 | OUT | output | Amplifier output, which swings rail to rail. |
| 2 | V- | power_in | Negative (lowest) power supply pin; the single-supply range is 2 V to 5.5 V and the 6 V absolute maximum can permanently damage the amplifier. |
| 3 | +IN | input | Positive (noninverting) input, which supports rail-to-rail common-mode range. |
| 4 | -IN | input | Negative (inverting) input. |
| 5 | V+ | power_in | Positive (highest) power supply pin; the single-supply range is 2 V to 5.5 V and a 0.1 uF capacitor should be placed tightly at this pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOT-23-5 |
| Category | Amplifiers/Comparators |
| Pins | 5 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage range |  | 2 |  | 5.5 | V | Single-supply range (Features, Overview) | 2 |
| Absolute maximum supply voltage |  |  |  | 6 | V | Stated as absolute maximum; can permanently damage the amplifier | 11 |
| Operating temperature range |  | -55 |  | 125 | °C | General description: specified for operation from -55°C to +125°C | 2 |
| Quiescent current |  |  | 600 |  | μA | Vs=5V | 2 |
| Input offset voltage |  |  | 2 |  | μV |  | 2 |
| Zero drift |  |  | 0.03 |  | μV/°C |  | 2 |
| Voltage noise density |  |  | 6 |  | nV/√Hz | at 1 kHz | 2 |
| Gain bandwidth product |  |  | 6 |  | MHz |  | 2 |
| Slew rate |  |  | 5 |  | V/us |  | 2 |

## CAD (KiCad official)

- Symbol: `LTC8551-MS`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `ltc8551-ms-etched.step` / `ltc8551-ms-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ltc8551-ms.step` / `ltc8551-ms.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MSKSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603371701237800960) (15 pp, sha256 `64a04ec1876d6649`, retrieved 2026-10-18, 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/ltc8551-ms-datasheet.pdf)