# RT9193-12GB-MS

**MSKSEMI** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

RT9193-12GB-MS from MSKSEMI, in a SOT-23-5. 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 | VIN | power_in | Regulator input supply. Operating range 1.2 V to 6 V (absolute max 6 V). Requires ~10 uF ceramic input capacitor (Ci) to ground for stability. |
| 2 | VSS | power_in | Ground / return pin (接地端). Common ground reference for input, output, and CE. |
| 3 | CE | input | Chip Enable (使能端). Logic high (VCEH >= 1.6 V, up to VIN) enables the regulator; logic low (VCEL <= 0.5 V) disables it and drops supply current to ~1 uA. Input current <= 0.5 uA. Do not leave floating. |
| 4 | NC | unconnected | No internal connection (空). Leave floating or tie to any safe potential per board convention. |
| 5 | VOUT | power_out | Regulated output (输出端). Fixed 1.2 V ±2% for the -12 variant, delivering up to 300 mA (VIN=4.3 V). Requires ~10 uF ceramic output capacitor (Co) to ground; internal current limit and short-circuit protection. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOT-23-5 |
| Category | PMIC |
| Pins | 5 |

## Ordering variants

Same part, different packaging or reel option.

- `RT9193-12GB-MS`
- `RT9193-12GB-MS15GB-MS`
- `RT9193-12GB-MS18GB-MS`
- `RT9193-12GB-MS25GB-M`
- `RT9193-12GB-MS28GB-MS`
- `RT9193-12GB-MS30GB-MS`
- `RT9193-12GB-MS33GB-MS`

## CAD (KiCad official)

- Symbol: `RT9193-12GB-MS`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `rt9193-12gb-ms-etched.step` / `rt9193-12gb-ms-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rt9193-12gb-ms.step` / `rt9193-12gb-ms.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MSKSEMI datasheet](docs/rt9193-12gb-ms-datasheet.pdf) (8 pp, sha256 `f30db9087e2ca5f2`, retrieved 2026-08-17, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/rt9193-12gb-ms-datasheet.pdf)