# RT9193-25GB-MS

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

RT9193-25GB-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 | VIN | power_in | Input supply pin, with an input voltage range of 1.2 V to 6 V and an absolute maximum rating of 6 V. |
| 2 | VSS | power_in | Ground pin, which is the reference for the regulator and the CE and VOUT limits. |
| 3 | CE | input | Enable pin: the output is on when CE is at or above 1.6 V and off when CE is at or below 0.5 V, with an input current of 0.5 uA maximum. |
| 4 | NC | unconnected | No connection; the datasheet marks this pin as empty (空). |
| 5 | VOUT | power_out | Regulated output pin, rated up to 300 mA at VIN = 4.3 V, with an absolute maximum range of Vss-0.3 V to Vin+0.3 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Input voltage | VIN | 1.2 |  | 6 | V |  | 5 |
| CE input voltage high | VCEH | 1.6 |  |  | V |  | 5 |
| CE input voltage low | VCEL | 0 |  | 0.5 | V |  | 5 |
| Output voltage temperature coefficient | ∆VOUT/(∆Ta •VOUT) | -290 |  | 290 | ppm/°C | VIN=VCE=4.3V, IOUT=3.3mA, 0℃<Ta<60℃ | 5 |
| Absolute maximum input voltage | Vin |  |  | 6 | V |  | 4 |
| Absolute maximum output current | Iout |  |  | 450 | mA |  | 4 |
| Maximum allowable power dissipation (SOT-23-5) | PD |  |  | 300 | mW | SOT-23-5 package | 4 |
| Operating temperature | TOPR | -40 |  | 85 | °C |  | 4 |
| Storage temperature | Tstg | -40 |  | 125 | °C |  | 4 |
| Soldering temperature | Tsolder |  |  | 260 | °C | 10s | 4 |
| Quiescent current | ISS1 |  | 70 |  | uA | VIN=VCE=5V | 5 |
| Shutdown current | ISS2 |  | 1 |  | uA | VIN=5V, VCE=VSS | 5 |
| CE input current | ICE |  | 0.5 |  | uA | VCE=0V to VIN | 5 |
| Dropout voltage | Vdrop1 |  | 35 |  | mV | VIN=4.3V, IOUT=10mA | 5 |
| Dropout voltage | Vdrop2 |  | 280 |  | mV | VIN=4.3V, IOUT=100mA | 5 |
| Power supply rejection ratio | PSRR |  | 70 |  | dB | VIN=VCE=4.3V+1VP-P AC, IOUT=10mA, f=1kHz | 5 |
| Input stability | ∆VOUT/(∆VIN •VOUT) |  | 0.2 |  | %/V | IOUT=10mA, 4.3V<VIN<7V | 5 |
| Load regulation | ∆VOUT |  | 12 |  | mV | VIN=VCE=4.3V, 1mA≤IOUT≤100mA | 5 |
| Maximum output current | IOUT(max) |  | 300 |  | mA | VIN=4.3V | 5 |

## CAD (KiCad official)

- Symbol: `RT9193-25GB-MS`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [MSKSEMI datasheet](docs/rt9193-25gb-ms-datasheet.pdf) (8 pp, sha256 `f30db9087e2ca5f2`, retrieved 2026-11-05, 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:** 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/rt9193-25gb-ms-datasheet.pdf)